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reactos/dll/opengl/mesa/main/teximage.c

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/*
* Mesa 3-D graphics library
*
* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
* Copyright (C) 2009 VMware, Inc. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* \file teximage.c
* Texture image-related functions.
*/
#include <precomp.h>
/**
* State changes which we care about for glCopyTex[Sub]Image() calls.
* In particular, we care about pixel transfer state and buffer state
* (such as glReadBuffer to make sure we read from the right renderbuffer).
*/
#define NEW_COPY_TEX_STATE (_NEW_BUFFERS | _NEW_PIXEL)
/**
* Return the simple base format for a given internal texture format.
* For example, given GL_LUMINANCE12_ALPHA4, return GL_LUMINANCE_ALPHA.
*
* \param ctx GL context.
* \param internalFormat the internal texture format token or 1, 2, 3, or 4.
*
* \return the corresponding \u base internal format (GL_ALPHA, GL_LUMINANCE,
* GL_LUMANCE_ALPHA, GL_INTENSITY, GL_RGB, or GL_RGBA), or -1 if invalid enum.
*
* This is the format which is used during texture application (i.e. the
* texture format and env mode determine the arithmetic used.
*
* XXX this could be static
*/
GLint
_mesa_base_tex_format( struct gl_context *ctx, GLint internalFormat )
{
switch (internalFormat) {
case GL_ALPHA:
case GL_ALPHA4:
case GL_ALPHA8:
case GL_ALPHA12:
case GL_ALPHA16:
return GL_ALPHA;
case 1:
case GL_LUMINANCE:
case GL_LUMINANCE4:
case GL_LUMINANCE8:
case GL_LUMINANCE12:
case GL_LUMINANCE16:
return GL_LUMINANCE;
case 2:
case GL_LUMINANCE_ALPHA:
case GL_LUMINANCE4_ALPHA4:
case GL_LUMINANCE6_ALPHA2:
case GL_LUMINANCE8_ALPHA8:
case GL_LUMINANCE12_ALPHA4:
case GL_LUMINANCE12_ALPHA12:
case GL_LUMINANCE16_ALPHA16:
return GL_LUMINANCE_ALPHA;
case GL_INTENSITY:
case GL_INTENSITY4:
case GL_INTENSITY8:
case GL_INTENSITY12:
case GL_INTENSITY16:
return GL_INTENSITY;
case 3:
case GL_RGB:
case GL_R3_G3_B2:
case GL_RGB4:
case GL_RGB5:
case GL_RGB8:
case GL_RGB10:
case GL_RGB12:
case GL_RGB16:
return GL_RGB;
case 4:
case GL_RGBA:
case GL_RGBA2:
case GL_RGBA4:
case GL_RGB5_A1:
case GL_RGBA8:
case GL_RGB10_A2:
case GL_RGBA12:
case GL_RGBA16:
return GL_RGBA;
default:
; /* fallthrough */
}
if (ctx->Extensions.MESA_ycbcr_texture) {
if (internalFormat == GL_YCBCR_MESA)
return GL_YCBCR_MESA;
}
if (ctx->VersionMajor >= 3 ||
ctx->Extensions.EXT_texture_integer) {
switch (internalFormat) {
case GL_RGBA8UI_EXT:
case GL_RGBA16UI_EXT:
case GL_RGBA32UI_EXT:
case GL_RGBA8I_EXT:
case GL_RGBA16I_EXT:
case GL_RGBA32I_EXT:
case GL_RGB10_A2UI:
return GL_RGBA;
case GL_RGB8UI_EXT:
case GL_RGB16UI_EXT:
case GL_RGB32UI_EXT:
case GL_RGB8I_EXT:
case GL_RGB16I_EXT:
case GL_RGB32I_EXT:
return GL_RGB;
}
}
if (ctx->Extensions.EXT_texture_integer) {
switch (internalFormat) {
case GL_ALPHA8UI_EXT:
case GL_ALPHA16UI_EXT:
case GL_ALPHA32UI_EXT:
case GL_ALPHA8I_EXT:
case GL_ALPHA16I_EXT:
case GL_ALPHA32I_EXT:
return GL_ALPHA;
case GL_INTENSITY8UI_EXT:
case GL_INTENSITY16UI_EXT:
case GL_INTENSITY32UI_EXT:
case GL_INTENSITY8I_EXT:
case GL_INTENSITY16I_EXT:
case GL_INTENSITY32I_EXT:
return GL_INTENSITY;
case GL_LUMINANCE8UI_EXT:
case GL_LUMINANCE16UI_EXT:
case GL_LUMINANCE32UI_EXT:
case GL_LUMINANCE8I_EXT:
case GL_LUMINANCE16I_EXT:
case GL_LUMINANCE32I_EXT:
return GL_LUMINANCE;
case GL_LUMINANCE_ALPHA8UI_EXT:
case GL_LUMINANCE_ALPHA16UI_EXT:
case GL_LUMINANCE_ALPHA32UI_EXT:
case GL_LUMINANCE_ALPHA8I_EXT:
case GL_LUMINANCE_ALPHA16I_EXT:
case GL_LUMINANCE_ALPHA32I_EXT:
return GL_LUMINANCE_ALPHA;
default:
; /* fallthrough */
}
}
return -1; /* error */
}
/**
* Is the given texture format a generic compressed format?
*/
/**
* For cube map faces, return a face index in [0,5].
* For other targets return 0;
*/
GLuint
_mesa_tex_target_to_face(GLenum target)
{
if (_mesa_is_cube_face(target))
return (GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X;
else
return 0;
}
/**
* Install gl_texture_image in a gl_texture_object according to the target
* and level parameters.
*
* \param tObj texture object.
* \param target texture target.
* \param level image level.
* \param texImage texture image.
*/
static void
set_tex_image(struct gl_texture_object *tObj,
GLenum target, GLint level,
struct gl_texture_image *texImage)
{
const GLuint face = _mesa_tex_target_to_face(target);
ASSERT(tObj);
ASSERT(texImage);
tObj->Image[face][level] = texImage;
/* Set the 'back' pointer */
texImage->TexObject = tObj;
texImage->Level = level;
texImage->Face = face;
}
/**
* Allocate a texture image structure.
*
* Called via ctx->Driver.NewTextureImage() unless overriden by a device
* driver.
*
* \return a pointer to gl_texture_image struct with all fields initialized to
* zero.
*/
struct gl_texture_image *
_mesa_new_texture_image( struct gl_context *ctx )
{
(void) ctx;
return CALLOC_STRUCT(gl_texture_image);
}
/**
* Free a gl_texture_image and associated data.
* This function is a fallback called via ctx->Driver.DeleteTextureImage().
*
* \param texImage texture image.
*
* Free the texture image structure and the associated image data.
*/
void
_mesa_delete_texture_image(struct gl_context *ctx,
struct gl_texture_image *texImage)
{
/* Free texImage->Data and/or any other driver-specific texture
* image storage.
*/
ASSERT(ctx->Driver.FreeTextureImageBuffer);
ctx->Driver.FreeTextureImageBuffer( ctx, texImage );
free(texImage);
}
/**
* Test if a target is a proxy target.
*
* \param target texture target.
*
* \return GL_TRUE if the target is a proxy target, GL_FALSE otherwise.
*/
GLboolean
_mesa_is_proxy_texture(GLenum target)
{
/*
* NUM_TEXTURE_TARGETS should match number of terms below, except there's no
* proxy for GL_TEXTURE_BUFFER and GL_TEXTURE_EXTERNAL_OES.
*/
assert(NUM_TEXTURE_TARGETS == 7 + 2);
return (target == GL_PROXY_TEXTURE_1D ||
target == GL_PROXY_TEXTURE_2D ||
target == GL_PROXY_TEXTURE_CUBE_MAP_ARB);
}
/**
* Return the proxy target which corresponds to the given texture target
*/
static GLenum
get_proxy_target(GLenum target)
{
switch (target) {
case GL_TEXTURE_1D:
case GL_PROXY_TEXTURE_1D:
return GL_PROXY_TEXTURE_1D;
case GL_TEXTURE_2D:
case GL_PROXY_TEXTURE_2D:
return GL_PROXY_TEXTURE_2D;
case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
case GL_TEXTURE_CUBE_MAP_ARB:
case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
return GL_PROXY_TEXTURE_CUBE_MAP_ARB;
default:
_mesa_problem(NULL, "unexpected target in get_proxy_target()");
return 0;
}
}
/**
* Get the texture object that corresponds to the target of the given
* texture unit. The target should have already been checked for validity.
*
* \param ctx GL context.
* \param texUnit texture unit.
* \param target texture target.
*
* \return pointer to the texture object on success, or NULL on failure.
*/
struct gl_texture_object *
_mesa_select_tex_object(struct gl_context *ctx,
GLenum target)
{
switch (target) {
case GL_TEXTURE_1D:
return ctx->Texture.Unit.CurrentTex[TEXTURE_1D_INDEX];
case GL_PROXY_TEXTURE_1D:
return ctx->Texture.ProxyTex[TEXTURE_1D_INDEX];
case GL_TEXTURE_2D:
return ctx->Texture.Unit.CurrentTex[TEXTURE_2D_INDEX];
case GL_PROXY_TEXTURE_2D:
return ctx->Texture.ProxyTex[TEXTURE_2D_INDEX];
default:
_mesa_problem(NULL, "bad target in _mesa_select_tex_object()");
return NULL;
}
}
/**
* Get a texture image pointer from a texture object, given a texture
* target and mipmap level. The target and level parameters should
* have already been error-checked.
*
* \param ctx GL context.
* \param texObj texture unit.
* \param target texture target.
* \param level image level.
*
* \return pointer to the texture image structure, or NULL on failure.
*/
struct gl_texture_image *
_mesa_select_tex_image(struct gl_context *ctx,
const struct gl_texture_object *texObj,
GLenum target, GLint level)
{
const GLuint face = _mesa_tex_target_to_face(target);
ASSERT(texObj);
ASSERT(level >= 0);
ASSERT(level < MAX_TEXTURE_LEVELS);
return texObj->Image[face][level];
}
/**
* Like _mesa_select_tex_image() but if the image doesn't exist, allocate
* it and install it. Only return NULL if passed a bad parameter or run
* out of memory.
*/
struct gl_texture_image *
_mesa_get_tex_image(struct gl_context *ctx, struct gl_texture_object *texObj,
GLenum target, GLint level)
{
struct gl_texture_image *texImage;
if (!texObj)
return NULL;
texImage = _mesa_select_tex_image(ctx, texObj, target, level);
if (!texImage) {
texImage = ctx->Driver.NewTextureImage(ctx);
if (!texImage) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "texture image allocation");
return NULL;
}
set_tex_image(texObj, target, level, texImage);
}
return texImage;
}
/**
* Return pointer to the specified proxy texture image.
* Note that proxy textures are per-context, not per-texture unit.
* \return pointer to texture image or NULL if invalid target, invalid
* level, or out of memory.
*/
struct gl_texture_image *
_mesa_get_proxy_tex_image(struct gl_context *ctx, GLenum target, GLint level)
{
struct gl_texture_image *texImage;
GLuint texIndex;
if (level < 0 )
return NULL;
switch (target) {
case GL_PROXY_TEXTURE_1D:
if (level >= ctx->Const.MaxTextureLevels)
return NULL;
texIndex = TEXTURE_1D_INDEX;
break;
case GL_PROXY_TEXTURE_2D:
if (level >= ctx->Const.MaxTextureLevels)
return NULL;
texIndex = TEXTURE_2D_INDEX;
break;
case GL_PROXY_TEXTURE_CUBE_MAP:
if (level >= ctx->Const.MaxCubeTextureLevels)
return NULL;
texIndex = TEXTURE_CUBE_INDEX;
break;
default:
return NULL;
}
texImage = ctx->Texture.ProxyTex[texIndex]->Image[0][level];
if (!texImage) {
texImage = ctx->Driver.NewTextureImage(ctx);
if (!texImage) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "proxy texture allocation");
return NULL;
}
ctx->Texture.ProxyTex[texIndex]->Image[0][level] = texImage;
/* Set the 'back' pointer */
texImage->TexObject = ctx->Texture.ProxyTex[texIndex];
}
return texImage;
}
/**
* Get the maximum number of allowed mipmap levels.
*
* \param ctx GL context.
* \param target texture target.
*
* \return the maximum number of allowed mipmap levels for the given
* texture target, or zero if passed a bad target.
*
* \sa gl_constants.
*/
GLint
_mesa_max_texture_levels(struct gl_context *ctx, GLenum target)
{
switch (target) {
case GL_TEXTURE_1D:
case GL_PROXY_TEXTURE_1D:
case GL_TEXTURE_2D:
case GL_PROXY_TEXTURE_2D:
return ctx->Const.MaxTextureLevels;
case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
return ctx->Extensions.ARB_texture_cube_map
? ctx->Const.MaxCubeTextureLevels : 0;
default:
return 0; /* bad target */
}
}
/**
* Return number of dimensions per mipmap level for the given texture target.
*/
GLint
_mesa_get_texture_dimensions(GLenum target)
{
switch (target) {
case GL_TEXTURE_1D:
case GL_PROXY_TEXTURE_1D:
return 1;
case GL_TEXTURE_2D:
case GL_TEXTURE_CUBE_MAP:
case GL_PROXY_TEXTURE_2D:
case GL_PROXY_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
return 2;
default:
_mesa_problem(NULL, "invalid target 0x%x in get_texture_dimensions()",
target);
return 2;
}
}
#if 000 /* not used anymore */
/*
* glTexImage[123]D can accept a NULL image pointer. In this case we
* create a texture image with unspecified image contents per the OpenGL
* spec.
*/
static GLubyte *
make_null_texture(GLint width, GLint height, GLint depth, GLenum format)
{
const GLint components = _mesa_components_in_format(format);
const GLint numPixels = width * height * depth;
GLubyte *data = (GLubyte *) MALLOC(numPixels * components * sizeof(GLubyte));
#ifdef DEBUG
/*
* Let's see if anyone finds this. If glTexImage2D() is called with
* a NULL image pointer then load the texture image with something
* interesting instead of leaving it indeterminate.
*/
if (data) {
static const char message[8][32] = {
" X X XXXXX XXX X ",
" XX XX X X X X X ",
" X X X X X X X ",
" X X XXXX XXX XXXXX ",
" X X X X X X ",
" X X X X X X X ",
" X X XXXXX XXX X X ",
" "
};
GLubyte *imgPtr = data;
GLint h, i, j, k;
for (h = 0; h < depth; h++) {
for (i = 0; i < height; i++) {
GLint srcRow = 7 - (i % 8);
for (j = 0; j < width; j++) {
GLint srcCol = j % 32;
GLubyte texel = (message[srcRow][srcCol]=='X') ? 255 : 70;
for (k = 0; k < components; k++) {
*imgPtr++ = texel;
}
}
}
}
}
#endif
return data;
}
#endif
/**
* Set the size and format-related fields of a gl_texture_image struct
* to zero. This is used when a proxy texture test fails.
*/
static void
clear_teximage_fields(struct gl_texture_image *img)
{
ASSERT(img);
img->_BaseFormat = 0;
img->InternalFormat = 0;
img->Border = 0;
img->Width = 0;
img->Height = 0;
img->Depth = 0;
img->Width2 = 0;
img->Height2 = 0;
img->Depth2 = 0;
img->WidthLog2 = 0;
img->HeightLog2 = 0;
img->DepthLog2 = 0;
img->TexFormat = MESA_FORMAT_NONE;
}
/**
* Initialize basic fields of the gl_texture_image struct.
*
* \param ctx GL context.
* \param img texture image structure to be initialized.
* \param width image width.
* \param height image height.
* \param depth image depth.
* \param border image border.
* \param internalFormat internal format.
* \param format the actual hardware format (one of MESA_FORMAT_*)
*
* Fills in the fields of \p img with the given information.
* Note: width, height and depth include the border.
*/
void
_mesa_init_teximage_fields(struct gl_context *ctx,
struct gl_texture_image *img,
GLsizei width, GLsizei height, GLsizei depth,
GLint border, GLenum internalFormat,
gl_format format)
{
GLenum target;
ASSERT(img);
ASSERT(width >= 0);
ASSERT(height >= 0);
ASSERT(depth >= 0);
target = img->TexObject->Target;
img->_BaseFormat = _mesa_base_tex_format( ctx, internalFormat );
ASSERT(img->_BaseFormat > 0);
img->InternalFormat = internalFormat;
img->Border = border;
img->Width = width;
img->Height = height;
img->Depth = depth;
img->Width2 = width - 2 * border; /* == 1 << img->WidthLog2; */
img->WidthLog2 = _mesa_logbase2(img->Width2);
switch(target) {
case GL_TEXTURE_1D:
case GL_PROXY_TEXTURE_1D:
if (height == 0)
img->Height2 = 0;
else
img->Height2 = 1;
img->HeightLog2 = 0;
if (depth == 0)
img->Depth2 = 0;
else
img->Depth2 = 1;
img->DepthLog2 = 0;
break;
case GL_TEXTURE_2D:
case GL_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
case GL_PROXY_TEXTURE_2D:
case GL_PROXY_TEXTURE_CUBE_MAP:
img->Height2 = height - 2 * border; /* == 1 << img->HeightLog2; */
img->HeightLog2 = _mesa_logbase2(img->Height2);
if (depth == 0)
img->Depth2 = 0;
else
img->Depth2 = 1;
img->DepthLog2 = 0;
break;
default:
_mesa_problem(NULL, "invalid target 0x%x in _mesa_init_teximage_fields()",
target);
}
img->MaxLog2 = MAX2(img->WidthLog2, img->HeightLog2);
img->TexFormat = format;
}
/**
* Free and clear fields of the gl_texture_image struct.
*
* \param ctx GL context.
* \param texImage texture image structure to be cleared.
*
* After the call, \p texImage will have no data associated with it. Its
* fields are cleared so that its parent object will test incomplete.
*/
void
_mesa_clear_texture_image(struct gl_context *ctx,
struct gl_texture_image *texImage)
{
ctx->Driver.FreeTextureImageBuffer(ctx, texImage);
clear_teximage_fields(texImage);
}
/**
* This is the fallback for Driver.TestProxyTexImage(). Test the texture
* level, width, height and depth against the ctx->Const limits for textures.
*
* A hardware driver might override this function if, for example, the
* max 3D texture size is 512x512x64 (i.e. not a cube).
*
* Note that width, height, depth == 0 is not an error. However, a
* texture with zero width/height/depth will be considered "incomplete"
* and texturing will effectively be disabled.
*
* \param target one of GL_PROXY_TEXTURE_1D, GL_PROXY_TEXTURE_2D,
* GL_PROXY_TEXTURE_3D, GL_PROXY_TEXTURE_RECTANGLE_NV,
* GL_PROXY_TEXTURE_CUBE_MAP_ARB.
* \param level as passed to glTexImage
* \param internalFormat as passed to glTexImage
* \param format as passed to glTexImage
* \param type as passed to glTexImage
* \param width as passed to glTexImage
* \param height as passed to glTexImage
* \param depth as passed to glTexImage
* \param border as passed to glTexImage
* \return GL_TRUE if the image is acceptable, GL_FALSE if not acceptable.
*/
GLboolean
_mesa_test_proxy_teximage(struct gl_context *ctx, GLenum target, GLint level,
GLint internalFormat, GLenum format, GLenum type,
GLint width, GLint height, GLint depth, GLint border)
{
GLint maxSize;
(void) internalFormat;
(void) format;
(void) type;
switch (target) {
case GL_PROXY_TEXTURE_1D:
maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
if (width < 2 * border || width > 2 * border + maxSize)
return GL_FALSE;
if (level >= ctx->Const.MaxTextureLevels)
return GL_FALSE;
if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
return GL_FALSE;
return GL_TRUE;
case GL_PROXY_TEXTURE_2D:
maxSize = 1 << (ctx->Const.MaxTextureLevels - 1);
if (width < 2 * border || width > 2 * border + maxSize)
return GL_FALSE;
if (height < 2 * border || height > 2 * border + maxSize)
return GL_FALSE;
if (level >= ctx->Const.MaxTextureLevels)
return GL_FALSE;
if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
return GL_FALSE;
if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
return GL_FALSE;
return GL_TRUE;
case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
maxSize = 1 << (ctx->Const.MaxCubeTextureLevels - 1);
if (width < 2 * border || width > 2 * border + maxSize)
return GL_FALSE;
if (height < 2 * border || height > 2 * border + maxSize)
return GL_FALSE;
if (level >= ctx->Const.MaxCubeTextureLevels)
return GL_FALSE;
if (width > 0 && !_mesa_is_pow_two(width - 2 * border))
return GL_FALSE;
if (height > 0 && !_mesa_is_pow_two(height - 2 * border))
return GL_FALSE;
return GL_TRUE;
default:
_mesa_problem(ctx, "Invalid target in _mesa_test_proxy_teximage");
return GL_FALSE;
}
}
/**
* Check if the memory used by the texture would exceed the driver's limit.
* This lets us support a max 3D texture size of 8K (for example) but
* prevents allocating a full 8K x 8K x 8K texture.
* XXX this could be rolled into the proxy texture size test (above) but
* we don't have the actual texture internal format at that point.
*/
static GLboolean
legal_texture_size(struct gl_context *ctx, gl_format format,
GLint width, GLint height, GLint depth)
{
uint64_t bytes = _mesa_format_image_size64(format, width, height, depth);
uint64_t mbytes = bytes / (1024 * 1024); /* convert to MB */
return mbytes <= (uint64_t) ctx->Const.MaxTextureMbytes;
}
/**
* Check if the given texture target value is legal for a
* glTexImage1/2/3D call.
*/
static GLboolean
legal_teximage_target(struct gl_context *ctx, GLuint dims, GLenum target)
{
switch (dims) {
case 1:
switch (target) {
case GL_TEXTURE_1D:
case GL_PROXY_TEXTURE_1D:
return GL_TRUE;
default:
return GL_FALSE;
}
case 2:
switch (target) {
case GL_TEXTURE_2D:
case GL_PROXY_TEXTURE_2D:
return GL_TRUE;
case GL_PROXY_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
return ctx->Extensions.ARB_texture_cube_map;
default:
return GL_FALSE;
}
default:
_mesa_problem(ctx, "invalid dims=%u in legal_teximage_target()", dims);
return GL_FALSE;
}
}
/**
* Check if the given texture target value is legal for a
* glTexSubImage, glCopyTexSubImage or glCopyTexImage call.
* The difference compared to legal_teximage_target() above is that
* proxy targets are not supported.
*/
static GLboolean
legal_texsubimage_target(struct gl_context *ctx, GLuint dims, GLenum target)
{
switch (dims) {
case 1:
return target == GL_TEXTURE_1D;
case 2:
switch (target) {
case GL_TEXTURE_2D:
return GL_TRUE;
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
return ctx->Extensions.ARB_texture_cube_map;
default:
return GL_FALSE;
}
default:
_mesa_problem(ctx, "invalid dims=%u in legal_texsubimage_target()",
dims);
return GL_FALSE;
}
}
/**
* Helper function to determine if a texture object is mutable (in terms
* of GL_ARB_texture_storage).
*/
static GLboolean
mutable_tex_object(struct gl_context *ctx, GLenum target)
{
if (ctx->Extensions.ARB_texture_storage) {
struct gl_texture_object *texObj =
_mesa_select_tex_object(ctx, target);
return !texObj->Immutable;
}
return GL_TRUE;
}
/**
* Test the glTexImage[123]D() parameters for errors.
*
* \param ctx GL context.
* \param dimensions texture image dimensions (must be 1, 2 or 3).
* \param target texture target given by the user.
* \param level image level given by the user.
* \param internalFormat internal format given by the user.
* \param format pixel data format given by the user.
* \param type pixel data type given by the user.
* \param width image width given by the user.
* \param height image height given by the user.
* \param depth image depth given by the user.
* \param border image border given by the user.
*
* \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
*
* Verifies each of the parameters against the constants specified in
* __struct gl_contextRec::Const and the supported extensions, and according
* to the OpenGL specification.
*/
static GLboolean
texture_error_check( struct gl_context *ctx,
GLuint dimensions, GLenum target,
GLint level, GLint internalFormat,
GLenum format, GLenum type,
GLint width, GLint height,
GLint depth, GLint border )
{
const GLenum proxyTarget = get_proxy_target(target);
const GLboolean isProxy = target == proxyTarget;
GLboolean sizeOK = GL_TRUE;
GLboolean colorFormat;
GLenum err;
/* Even though there are no color-index textures, we still have to support
* uploading color-index data and remapping it to RGB via the
* GL_PIXEL_MAP_I_TO_[RGBA] tables.
*/
const GLboolean indexFormat = (format == GL_COLOR_INDEX);
/* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */
if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
if (!isProxy) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glTexImage%dD(level=%d)", dimensions, level);
}
return GL_TRUE;
}
/* Check border */
if (border < 0 || border > 1) {
if (!isProxy) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glTexImage%dD(border=%d)", dimensions, border);
}
return GL_TRUE;
}
if (width < 0 || height < 0 || depth < 0) {
if (!isProxy) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glTexImage%dD(width, height or depth < 0)", dimensions);
}
return GL_TRUE;
}
/* Do this simple check before calling the TestProxyTexImage() function */
if (proxyTarget == GL_PROXY_TEXTURE_CUBE_MAP_ARB) {
sizeOK = (width == height);
}
/*
* Use the proxy texture driver hook to see if the size/level/etc are
* legal.
*/
sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,
internalFormat, format,
type, width, height,
depth, border);
if (!sizeOK) {
if (!isProxy) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glTexImage%dD(level=%d, width=%d, height=%d, depth=%d)",
dimensions, level, width, height, depth);
}
return GL_TRUE;
}
/* Check internalFormat */
if (_mesa_base_tex_format(ctx, internalFormat) < 0) {
if (!isProxy) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glTexImage%dD(internalFormat=%s)",
dimensions, _mesa_lookup_enum_by_nr(internalFormat));
}
return GL_TRUE;
}
/* Check incoming image format and type */
err = _mesa_error_check_format_and_type(ctx, format, type);
if (err != GL_NO_ERROR) {
if (!isProxy) {
_mesa_error(ctx, err,
"glTexImage%dD(incompatible format 0x%x, type 0x%x)",
dimensions, format, type);
}
return GL_TRUE;
}
/* make sure internal format and format basically agree */
colorFormat = _mesa_is_color_format(format);
if ((_mesa_is_color_format(internalFormat) && !colorFormat && !indexFormat) ||
(_mesa_is_depth_format(internalFormat) != _mesa_is_depth_format(format)) ||
(_mesa_is_ycbcr_format(internalFormat) != _mesa_is_ycbcr_format(format))) {
if (!isProxy)
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTexImage%dD(incompatible internalFormat 0x%x, format 0x%x)",
dimensions, internalFormat, format);
return GL_TRUE;
}
/* additional checks for ycbcr textures */
if (internalFormat == GL_YCBCR_MESA) {
ASSERT(ctx->Extensions.MESA_ycbcr_texture);
if (type != GL_UNSIGNED_SHORT_8_8_MESA &&
type != GL_UNSIGNED_SHORT_8_8_REV_MESA) {
char message[100];
_mesa_snprintf(message, sizeof(message),
"glTexImage%dD(format/type YCBCR mismatch", dimensions);
_mesa_error(ctx, GL_INVALID_ENUM, "%s", message);
return GL_TRUE; /* error */
}
if (target != GL_TEXTURE_2D &&
target != GL_PROXY_TEXTURE_2D) {
if (!isProxy)
_mesa_error(ctx, GL_INVALID_ENUM, "glTexImage(target)");
return GL_TRUE;
}
if (border != 0) {
if (!isProxy) {
char message[100];
_mesa_snprintf(message, sizeof(message),
"glTexImage%dD(format=GL_YCBCR_MESA and border=%d)",
dimensions, border);
_mesa_error(ctx, GL_INVALID_VALUE, "%s", message);
}
return GL_TRUE;
}
}
/* additional checks for depth textures */
if (_mesa_base_tex_format(ctx, internalFormat) == GL_DEPTH_COMPONENT) {
/* Only 1D, 2D, rect, array and cube textures supported, not 3D
* Cubemaps are only supported for GL version > 3.0 or with EXT_gpu_shader4 */
if (target != GL_TEXTURE_1D &&
target != GL_PROXY_TEXTURE_1D &&
target != GL_TEXTURE_2D &&
target != GL_PROXY_TEXTURE_2D &&
!((_mesa_is_cube_face(target) || target == GL_PROXY_TEXTURE_CUBE_MAP) &&
(ctx->VersionMajor >= 3))) {
if (!isProxy)
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexImage(target/internalFormat)");
return GL_TRUE;
}
}
/* additional checks for integer textures */
if ((ctx->VersionMajor >= 3 || ctx->Extensions.EXT_texture_integer) &&
(_mesa_is_integer_format(format) !=
_mesa_is_integer_format(internalFormat))) {
if (!isProxy) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTexImage%dD(integer/non-integer format mismatch)",
dimensions);
}
return GL_TRUE;
}
if (!mutable_tex_object(ctx, target)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTexImage%dD(immutable texture)", dimensions);
return GL_TRUE;
}
/* if we get here, the parameters are OK */
return GL_FALSE;
}
/**
* Test glTexSubImage[123]D() parameters for errors.
*
* \param ctx GL context.
* \param dimensions texture image dimensions (must be 1, 2 or 3).
* \param target texture target given by the user.
* \param level image level given by the user.
* \param xoffset sub-image x offset given by the user.
* \param yoffset sub-image y offset given by the user.
* \param zoffset sub-image z offset given by the user.
* \param format pixel data format given by the user.
* \param type pixel data type given by the user.
* \param width image width given by the user.
* \param height image height given by the user.
* \param depth image depth given by the user.
*
* \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
*
* Verifies each of the parameters against the constants specified in
* __struct gl_contextRec::Const and the supported extensions, and according
* to the OpenGL specification.
*/
static GLboolean
subtexture_error_check( struct gl_context *ctx, GLuint dimensions,
GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLint width, GLint height, GLint depth,
GLenum format, GLenum type )
{
GLenum err;
/* Basic level check */
if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
_mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage2D(level=%d)", level);
return GL_TRUE;
}
/* Check for negative sizes */
if (width < 0) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glTexSubImage%dD(width=%d)", dimensions, width);
return GL_TRUE;
}
if (height < 0 && dimensions > 1) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glTexSubImage%dD(height=%d)", dimensions, height);
return GL_TRUE;
}
if (depth < 0 && dimensions > 2) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glTexSubImage%dD(depth=%d)", dimensions, depth);
return GL_TRUE;
}
err = _mesa_error_check_format_and_type(ctx, format, type);
if (err != GL_NO_ERROR) {
_mesa_error(ctx, err,
"glTexSubImage%dD(incompatible format 0x%x, type 0x%x)",
dimensions, format, type);
return GL_TRUE;
}
return GL_FALSE;
}
/**
* Do second part of glTexSubImage which depends on the destination texture.
* \return GL_TRUE if error recorded, GL_FALSE otherwise
*/
static GLboolean
subtexture_error_check2( struct gl_context *ctx, GLuint dimensions,
GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLint width, GLint height, GLint depth,
GLenum format, GLenum type,
const struct gl_texture_image *destTex )
{
if (!destTex) {
/* undefined image level */
_mesa_error(ctx, GL_INVALID_OPERATION, "glTexSubImage%dD", dimensions);
return GL_TRUE;
}
if (xoffset < -((GLint)destTex->Border)) {
_mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(xoffset)",
dimensions);
return GL_TRUE;
}
if (xoffset + width > (GLint) (destTex->Width + destTex->Border)) {
_mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(xoffset+width)",
dimensions);
return GL_TRUE;
}
if (dimensions > 1) {
if (yoffset < -((GLint)destTex->Border)) {
_mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(yoffset)",
dimensions);
return GL_TRUE;
}
if (yoffset + height > (GLint) (destTex->Height + destTex->Border)) {
_mesa_error(ctx, GL_INVALID_VALUE, "glTexSubImage%dD(yoffset+height)",
dimensions);
return GL_TRUE;
}
}
if (ctx->VersionMajor >= 3 || ctx->Extensions.EXT_texture_integer) {
/* both source and dest must be integer-valued, or neither */
if (_mesa_is_format_integer_color(destTex->TexFormat) !=
_mesa_is_integer_format(format)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glTexSubImage%dD(integer/non-integer format mismatch)",
dimensions);
return GL_TRUE;
}
}
return GL_FALSE;
}
/**
* Test glCopyTexImage[12]D() parameters for errors.
*
* \param ctx GL context.
* \param dimensions texture image dimensions (must be 1, 2 or 3).
* \param target texture target given by the user.
* \param level image level given by the user.
* \param internalFormat internal format given by the user.
* \param width image width given by the user.
* \param height image height given by the user.
* \param border texture border.
*
* \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
*
* Verifies each of the parameters against the constants specified in
* __struct gl_contextRec::Const and the supported extensions, and according
* to the OpenGL specification.
*/
static GLboolean
copytexture_error_check( struct gl_context *ctx, GLuint dimensions,
GLenum target, GLint level, GLint internalFormat,
GLint width, GLint height, GLint border )
{
const GLenum proxyTarget = get_proxy_target(target);
const GLenum type = GL_FLOAT;
GLboolean sizeOK;
GLint baseFormat;
/* check target */
if (!legal_texsubimage_target(ctx, dimensions, target)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexImage%uD(target=%s)",
dimensions, _mesa_lookup_enum_by_nr(target));
return GL_TRUE;
}
/* Basic level check (more checking in ctx->Driver.TestProxyTexImage) */
if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexImage%dD(level=%d)", dimensions, level);
return GL_TRUE;
}
/* Check border */
if (border < 0 || border > 1) {
return GL_TRUE;
}
baseFormat = _mesa_base_tex_format(ctx, internalFormat);
if (baseFormat < 0) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexImage%dD(internalFormat)", dimensions);
return GL_TRUE;
}
if (!_mesa_source_buffer_exists(ctx, baseFormat)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexImage%dD(missing readbuffer)", dimensions);
return GL_TRUE;
}
/* From the EXT_texture_integer spec:
*
* "INVALID_OPERATION is generated by CopyTexImage* and CopyTexSubImage*
* if the texture internalformat is an integer format and the read color
* buffer is not an integer format, or if the internalformat is not an
* integer format and the read color buffer is an integer format."
*/
if (_mesa_is_color_format(internalFormat)) {
struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
if (_mesa_is_integer_format(rb->InternalFormat) !=
_mesa_is_integer_format(internalFormat)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexImage%dD(integer vs non-integer)", dimensions);
return GL_TRUE;
}
}
/* Do size, level checking */
sizeOK = (proxyTarget == GL_PROXY_TEXTURE_CUBE_MAP_ARB)
? (width == height) : 1;
sizeOK = sizeOK && ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,
internalFormat, baseFormat,
type, width, height,
1, border);
if (!sizeOK) {
if (dimensions == 1) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexImage1D(width=%d)", width);
}
else {
ASSERT(dimensions == 2);
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexImage2D(width=%d, height=%d)", width, height);
}
return GL_TRUE;
}
if (!mutable_tex_object(ctx, target)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexImage%dD(immutable texture)", dimensions);
return GL_TRUE;
}
/* if we get here, the parameters are OK */
return GL_FALSE;
}
/**
* Test glCopyTexSubImage[12]D() parameters for errors.
* Note that this is the first part of error checking.
* See also copytexsubimage_error_check2() below for the second part.
*
* \param ctx GL context.
* \param dimensions texture image dimensions (must be 1, 2 or 3).
* \param target texture target given by the user.
* \param level image level given by the user.
*
* \return GL_TRUE if an error was detected, or GL_FALSE if no errors.
*/
static GLboolean
copytexsubimage_error_check1( struct gl_context *ctx, GLuint dimensions,
GLenum target, GLint level)
{
/* check target (proxies not allowed) */
if (!legal_texsubimage_target(ctx, dimensions, target)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glCopyTexSubImage%uD(target=%s)",
dimensions, _mesa_lookup_enum_by_nr(target));
return GL_TRUE;
}
/* Check level */
if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(level=%d)", dimensions, level);
return GL_TRUE;
}
return GL_FALSE;
}
/**
* Second part of error checking for glCopyTexSubImage[12]D().
* \param xoffset sub-image x offset given by the user.
* \param yoffset sub-image y offset given by the user.
* \param zoffset sub-image z offset given by the user.
* \param width image width given by the user.
* \param height image height given by the user.
*/
static GLboolean
copytexsubimage_error_check2( struct gl_context *ctx, GLuint dimensions,
GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height,
const struct gl_texture_image *teximage )
{
/* check that dest tex image exists */
if (!teximage) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexSubImage%dD(undefined texture level: %d)",
dimensions, level);
return GL_TRUE;
}
/* Check size */
if (width < 0) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(width=%d)", dimensions, width);
return GL_TRUE;
}
if (dimensions > 1 && height < 0) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(height=%d)", dimensions, height);
return GL_TRUE;
}
/* check x/y offsets */
if (xoffset < -((GLint)teximage->Border)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(xoffset=%d)", dimensions, xoffset);
return GL_TRUE;
}
if (xoffset + width > (GLint) (teximage->Width + teximage->Border)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(xoffset+width)", dimensions);
return GL_TRUE;
}
if (dimensions > 1) {
if (yoffset < -((GLint)teximage->Border)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(yoffset=%d)", dimensions, yoffset);
return GL_TRUE;
}
/* NOTE: we're adding the border here, not subtracting! */
if (yoffset + height > (GLint) (teximage->Height + teximage->Border)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(yoffset+height)", dimensions);
return GL_TRUE;
}
}
/* check z offset */
if (dimensions > 2) {
if (zoffset < -((GLint)teximage->Border)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(zoffset)", dimensions);
return GL_TRUE;
}
if (zoffset > (GLint) (teximage->Depth + teximage->Border)) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glCopyTexSubImage%dD(zoffset+depth)", dimensions);
return GL_TRUE;
}
}
if (teximage->InternalFormat == GL_YCBCR_MESA) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glCopyTexSubImage2D");
return GL_TRUE;
}
if (!_mesa_source_buffer_exists(ctx, teximage->_BaseFormat)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexSubImage%dD(missing readbuffer, format=0x%x)",
dimensions, teximage->_BaseFormat);
return GL_TRUE;
}
/* From the EXT_texture_integer spec:
*
* "INVALID_OPERATION is generated by CopyTexImage* and CopyTexSubImage*
* if the texture internalformat is an integer format and the read color
* buffer is not an integer format, or if the internalformat is not an
* integer format and the read color buffer is an integer format."
*/
if (_mesa_is_color_format(teximage->InternalFormat)) {
struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
if (_mesa_is_format_integer_color(rb->Format) !=
_mesa_is_format_integer_color(teximage->TexFormat)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyTexImage%dD(integer vs non-integer)", dimensions);
return GL_TRUE;
}
}
/* if we get here, the parameters are OK */
return GL_FALSE;
}
/** Callback info for walking over FBO hash table */
struct cb_info
{
struct gl_context *ctx;
struct gl_texture_object *texObj;
GLuint level, face;
};
/** Debug helper: override the user-requested internal format */
static GLenum
override_internal_format(GLenum internalFormat, GLint width, GLint height)
{
#if 0
if (internalFormat == GL_RGBA16F_ARB ||
internalFormat == GL_RGBA32F_ARB) {
printf("Convert rgba float tex to int %d x %d\n", width, height);
return GL_RGBA;
}
else if (internalFormat == GL_RGB16F_ARB ||
internalFormat == GL_RGB32F_ARB) {
printf("Convert rgb float tex to int %d x %d\n", width, height);
return GL_RGB;
}
else if (internalFormat == GL_LUMINANCE_ALPHA16F_ARB ||
internalFormat == GL_LUMINANCE_ALPHA32F_ARB) {
printf("Convert luminance float tex to int %d x %d\n", width, height);
return GL_LUMINANCE_ALPHA;
}
else if (internalFormat == GL_LUMINANCE16F_ARB ||
internalFormat == GL_LUMINANCE32F_ARB) {
printf("Convert luminance float tex to int %d x %d\n", width, height);
return GL_LUMINANCE;
}
else if (internalFormat == GL_ALPHA16F_ARB ||
internalFormat == GL_ALPHA32F_ARB) {
printf("Convert luminance float tex to int %d x %d\n", width, height);
return GL_ALPHA;
}
else {
return internalFormat;
}
#else
return internalFormat;
#endif
}
/**
* Choose the actual hardware format for a texture image.
* Try to use the same format as the previous image level when possible.
* Otherwise, ask the driver for the best format.
* It's important to try to choose a consistant format for all levels
* for efficient texture memory layout/allocation. In particular, this
* comes up during automatic mipmap generation.
*/
gl_format
_mesa_choose_texture_format(struct gl_context *ctx,
struct gl_texture_object *texObj,
GLenum target, GLint level,
GLenum internalFormat, GLenum format, GLenum type)
{
gl_format f;
/* see if we've already chosen a format for the previous level */
if (level > 0) {
struct gl_texture_image *prevImage =
_mesa_select_tex_image(ctx, texObj, target, level - 1);
/* See if the prev level is defined and has an internal format which
* matches the new internal format.
*/
if (prevImage &&
prevImage->Width > 0 &&
prevImage->InternalFormat == internalFormat) {
/* use the same format */
ASSERT(prevImage->TexFormat != MESA_FORMAT_NONE);
return prevImage->TexFormat;
}
}
/* choose format from scratch */
f = ctx->Driver.ChooseTextureFormat(ctx, internalFormat, format, type);
ASSERT(f != MESA_FORMAT_NONE);
return f;
}
/**
* Adjust pixel unpack params and image dimensions to strip off the
* texture border.
*
* Gallium and intel don't support texture borders. They've seldem been used
* and seldom been implemented correctly anyway.
*
* \param unpackNew returns the new pixel unpack parameters
*/
static void
strip_texture_border(GLint *border,
GLint *width, GLint *height, GLint *depth,
const struct gl_pixelstore_attrib *unpack,
struct gl_pixelstore_attrib *unpackNew)
{
assert(*border > 0); /* sanity check */
*unpackNew = *unpack;
if (unpackNew->RowLength == 0)
unpackNew->RowLength = *width;
if (depth && unpackNew->ImageHeight == 0)
unpackNew->ImageHeight = *height;
unpackNew->SkipPixels += *border;
if (height)
unpackNew->SkipRows += *border;
if (depth)
unpackNew->SkipImages += *border;
assert(*width >= 3);
*width = *width - 2 * *border;
if (height && *height >= 3)
*height = *height - 2 * *border;
if (depth && *depth >= 3)
*depth = *depth - 2 * *border;
*border = 0;
}
/**
* Common code to implement all the glTexImage1D/2D/3D functions.
*/
static void
teximage(struct gl_context *ctx, GLuint dims,
GLenum target, GLint level, GLint internalFormat,
GLsizei width, GLsizei height, GLsizei depth,
GLint border, GLenum format, GLenum type,
const GLvoid *pixels)
{
GLboolean error;
struct gl_pixelstore_attrib unpack_no_border;
const struct gl_pixelstore_attrib *unpack = &ctx->Unpack;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
_mesa_debug(ctx, "glTexImage%uD %s %d %s %d %d %d %d %s %s %p\n",
dims,
_mesa_lookup_enum_by_nr(target), level,
_mesa_lookup_enum_by_nr(internalFormat),
width, height, depth, border,
_mesa_lookup_enum_by_nr(format),
_mesa_lookup_enum_by_nr(type), pixels);
internalFormat = override_internal_format(internalFormat, width, height);
/* target error checking */
if (!legal_teximage_target(ctx, dims, target)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glTexImage%uD(target=%s)",
dims, _mesa_lookup_enum_by_nr(target));
return;
}
/* general error checking */
error = texture_error_check(ctx, dims, target, level, internalFormat,
format, type, width, height, depth, border);
if (_mesa_is_proxy_texture(target)) {
/* Proxy texture: just clear or set state depending on error checking */
struct gl_texture_image *texImage =
_mesa_get_proxy_tex_image(ctx, target, level);
if (error) {
/* when error, clear all proxy texture image parameters */
if (texImage)
clear_teximage_fields(texImage);
}
else {
/* no error, set the tex image parameters */
struct gl_texture_object *texObj =
_mesa_select_tex_object(ctx, target);
gl_format texFormat = _mesa_choose_texture_format(ctx, texObj,
target, level,
internalFormat,
format, type);
if (legal_texture_size(ctx, texFormat, width, height, depth)) {
_mesa_init_teximage_fields(ctx, texImage, width, height,
depth, border, internalFormat,
texFormat);
}
else if (texImage) {
clear_teximage_fields(texImage);
}
}
}
else {
/* non-proxy target */
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
if (error) {
return; /* error was recorded */
}
/* Allow a hardware driver to just strip out the border, to provide
* reliable but slightly incorrect hardware rendering instead of
* rarely-tested software fallback rendering.
*/
if (border && ctx->Const.StripTextureBorder) {
strip_texture_border(&border, &width, &height, &depth, unpack,
&unpack_no_border);
unpack = &unpack_no_border;
}
if (ctx->NewState & _NEW_PIXEL)
_mesa_update_state(ctx);
texObj = _mesa_select_tex_object(ctx, target);
_mesa_lock_texture(ctx, texObj);
{
texImage = _mesa_get_tex_image(ctx, texObj, target, level);
if (!texImage) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims);
}
else {
gl_format texFormat;
ctx->Driver.FreeTextureImageBuffer(ctx, texImage);
texFormat = _mesa_choose_texture_format(ctx, texObj, target, level,
internalFormat, format,
type);
if (legal_texture_size(ctx, texFormat, width, height, depth)) {
_mesa_init_teximage_fields(ctx, texImage,
width, height, depth,
border, internalFormat, texFormat);
/* Give the texture to the driver. <pixels> may be null. */
switch (dims) {
case 1:
ctx->Driver.TexImage1D(ctx, texImage, internalFormat,
width, border, format,
type, pixels, unpack);
break;
case 2:
ctx->Driver.TexImage2D(ctx, texImage, internalFormat,
width, height, border, format,
type, pixels, unpack);
break;
default:
_mesa_problem(ctx, "invalid dims=%u in teximage()", dims);
}
/* state update */
texObj->_Complete = GL_FALSE;
ctx->NewState |= _NEW_TEXTURE;
}
else {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims);
}
}
}
_mesa_unlock_texture(ctx, texObj);
}
}
/*
* Called from the API. Note that width includes the border.
*/
void GLAPIENTRY
_mesa_TexImage1D( GLenum target, GLint level, GLint internalFormat,
GLsizei width, GLint border, GLenum format,
GLenum type, const GLvoid *pixels )
{
GET_CURRENT_CONTEXT(ctx);
teximage(ctx, 1, target, level, internalFormat, width, 1, 1,
border, format, type, pixels);
}
void GLAPIENTRY
_mesa_TexImage2D( GLenum target, GLint level, GLint internalFormat,
GLsizei width, GLsizei height, GLint border,
GLenum format, GLenum type,
const GLvoid *pixels )
{
GET_CURRENT_CONTEXT(ctx);
teximage(ctx, 2, target, level, internalFormat, width, height, 1,
border, format, type, pixels);
}
/**
* Implement all the glTexSubImage1/2/3D() functions.
*/
static void
texsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height, GLsizei depth,
GLenum format, GLenum type, const GLvoid *pixels )
{
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
_mesa_debug(ctx, "glTexSubImage%uD %s %d %d %d %d %d %d %d %s %s %p\n",
dims,
_mesa_lookup_enum_by_nr(target), level,
xoffset, yoffset, zoffset, width, height, depth,
_mesa_lookup_enum_by_nr(format),
_mesa_lookup_enum_by_nr(type), pixels);
/* check target (proxies not allowed) */
if (!legal_texsubimage_target(ctx, dims, target)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage%uD(target=%s)",
dims, _mesa_lookup_enum_by_nr(target));
return;
}
if (ctx->NewState & _NEW_PIXEL)
_mesa_update_state(ctx);
if (subtexture_error_check(ctx, dims, target, level, xoffset, yoffset, zoffset,
width, height, depth, format, type)) {
return; /* error was detected */
}
texObj = _mesa_select_tex_object(ctx, target);
_mesa_lock_texture(ctx, texObj);
{
texImage = _mesa_select_tex_image(ctx, texObj, target, level);
if (subtexture_error_check2(ctx, dims, target, level,
xoffset, yoffset, zoffset,
width, height, depth,
format, type, texImage)) {
/* error was recorded */
}
else if (width > 0 && height > 0 && depth > 0) {
/* If we have a border, offset=-1 is legal. Bias by border width. */
switch (dims) {
case 3:
zoffset += texImage->Border;
/* fall-through */
case 2:
yoffset += texImage->Border;
/* fall-through */
case 1:
xoffset += texImage->Border;
}
switch (dims) {
case 1:
ctx->Driver.TexSubImage1D(ctx, texImage,
xoffset, width,
format, type, pixels, &ctx->Unpack);
break;
case 2:
ctx->Driver.TexSubImage2D(ctx, texImage,
xoffset, yoffset, width, height,
format, type, pixels, &ctx->Unpack);
break;
default:
_mesa_problem(ctx, "unexpected dims in subteximage()");
}
ctx->NewState |= _NEW_TEXTURE;
}
}
_mesa_unlock_texture(ctx, texObj);
}
void GLAPIENTRY
_mesa_TexSubImage1D( GLenum target, GLint level,
GLint xoffset, GLsizei width,
GLenum format, GLenum type,
const GLvoid *pixels )
{
GET_CURRENT_CONTEXT(ctx);
texsubimage(ctx, 1, target, level,
xoffset, 0, 0,
width, 1, 1,
format, type, pixels);
}
void GLAPIENTRY
_mesa_TexSubImage2D( GLenum target, GLint level,
GLint xoffset, GLint yoffset,
GLsizei width, GLsizei height,
GLenum format, GLenum type,
const GLvoid *pixels )
{
GET_CURRENT_CONTEXT(ctx);
texsubimage(ctx, 2, target, level,
xoffset, yoffset, 0,
width, height, 1,
format, type, pixels);
}
/**
* For glCopyTexSubImage, return the source renderbuffer to copy texel data
* from. This depends on whether the texture contains color or depth values.
*/
static struct gl_renderbuffer *
get_copy_tex_image_source(struct gl_context *ctx, gl_format texFormat)
{
if (_mesa_get_format_bits(texFormat, GL_DEPTH_BITS) > 0) {
/* reading from depth/stencil buffer */
return ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;
}
else {
/* copying from color buffer */
return ctx->ReadBuffer->_ColorReadBuffer;
}
}
/**
* Implement the glCopyTexImage1/2D() functions.
*/
static void
copyteximage(struct gl_context *ctx, GLuint dims,
GLenum target, GLint level, GLenum internalFormat,
GLint x, GLint y, GLsizei width, GLsizei height, GLint border )
{
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
_mesa_debug(ctx, "glCopyTexImage%uD %s %d %s %d %d %d %d %d\n",
dims,
_mesa_lookup_enum_by_nr(target), level,
_mesa_lookup_enum_by_nr(internalFormat),
x, y, width, height, border);
if (ctx->NewState & NEW_COPY_TEX_STATE)
_mesa_update_state(ctx);
if (copytexture_error_check(ctx, dims, target, level, internalFormat,
width, height, border))
return;
texObj = _mesa_select_tex_object(ctx, target);
if (border && ctx->Const.StripTextureBorder) {
x += border;
width -= border * 2;
if (dims == 2) {
y += border;
height -= border * 2;
}
border = 0;
}
_mesa_lock_texture(ctx, texObj);
{
texImage = _mesa_get_tex_image(ctx, texObj, target, level);
if (!texImage) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims);
}
else {
/* choose actual hw format */
gl_format texFormat = _mesa_choose_texture_format(ctx, texObj,
target, level,
internalFormat,
GL_NONE, GL_NONE);
if (legal_texture_size(ctx, texFormat, width, height, 1)) {
GLint srcX = x, srcY = y, dstX = 0, dstY = 0;
/* Free old texture image */
ctx->Driver.FreeTextureImageBuffer(ctx, texImage);
_mesa_init_teximage_fields(ctx, texImage, width, height, 1,
border, internalFormat, texFormat);
/* Allocate texture memory (no pixel data yet) */
if (dims == 1) {
ctx->Driver.TexImage1D(ctx, texImage, internalFormat,
width, border, GL_NONE, GL_NONE, NULL,
&ctx->Unpack);
}
else {
ctx->Driver.TexImage2D(ctx, texImage, internalFormat,
width, height, border, GL_NONE, GL_NONE,
NULL, &ctx->Unpack);
}
if (_mesa_clip_copytexsubimage(ctx, &dstX, &dstY, &srcX, &srcY,
&width, &height)) {
struct gl_renderbuffer *srcRb =
get_copy_tex_image_source(ctx, texImage->TexFormat);
if (dims == 1)
ctx->Driver.CopyTexSubImage1D(ctx, texImage, dstX,
srcRb, srcX, srcY, width);
else
ctx->Driver.CopyTexSubImage2D(ctx, texImage, dstX, dstY,
srcRb, srcX, srcY, width, height);
}
/* state update */
texObj->_Complete = GL_FALSE;
ctx->NewState |= _NEW_TEXTURE;
}
else {
/* probably too large of image */
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyTexImage%uD", dims);
}
}
}
_mesa_unlock_texture(ctx, texObj);
}
void GLAPIENTRY
_mesa_CopyTexImage1D( GLenum target, GLint level,
GLenum internalFormat,
GLint x, GLint y,
GLsizei width, GLint border )
{
GET_CURRENT_CONTEXT(ctx);
copyteximage(ctx, 1, target, level, internalFormat, x, y, width, 1, border);
}
void GLAPIENTRY
_mesa_CopyTexImage2D( GLenum target, GLint level, GLenum internalFormat,
GLint x, GLint y, GLsizei width, GLsizei height,
GLint border )
{
GET_CURRENT_CONTEXT(ctx);
copyteximage(ctx, 2, target, level, internalFormat,
x, y, width, height, border);
}
/**
* Implementation for glCopyTexSubImage1/2/3D() functions.
*/
static void
copytexsubimage(struct gl_context *ctx, GLuint dims, GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLint x, GLint y, GLsizei width, GLsizei height)
{
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
_mesa_debug(ctx, "glCopyTexSubImage%uD %s %d %d %d %d %d %d %d %d\n",
dims,
_mesa_lookup_enum_by_nr(target),
level, xoffset, yoffset, zoffset, x, y, width, height);
if (ctx->NewState & NEW_COPY_TEX_STATE)
_mesa_update_state(ctx);
if (copytexsubimage_error_check1(ctx, dims, target, level))
return;
texObj = _mesa_select_tex_object(ctx, target);
_mesa_lock_texture(ctx, texObj);
{
texImage = _mesa_select_tex_image(ctx, texObj, target, level);
if (copytexsubimage_error_check2(ctx, dims, target, level, xoffset, yoffset,
zoffset, width, height, texImage)) {
/* error was recored */
}
else {
/* If we have a border, offset=-1 is legal. Bias by border width. */
switch (dims) {
case 3:
zoffset += texImage->Border;
/* fall-through */
case 2:
yoffset += texImage->Border;
/* fall-through */
case 1:
xoffset += texImage->Border;
}
if (_mesa_clip_copytexsubimage(ctx, &xoffset, &yoffset, &x, &y,
&width, &height)) {
struct gl_renderbuffer *srcRb =
get_copy_tex_image_source(ctx, texImage->TexFormat);
switch (dims) {
case 1:
ctx->Driver.CopyTexSubImage1D(ctx, texImage, xoffset,
srcRb, x, y, width);
break;
case 2:
ctx->Driver.CopyTexSubImage2D(ctx, texImage, xoffset, yoffset,
srcRb, x, y, width, height);
break;
default:
_mesa_problem(ctx, "bad dims in copytexsubimage()");
}
ctx->NewState |= _NEW_TEXTURE;
}
}
}
_mesa_unlock_texture(ctx, texObj);
}
void GLAPIENTRY
_mesa_CopyTexSubImage1D( GLenum target, GLint level,
GLint xoffset, GLint x, GLint y, GLsizei width )
{
GET_CURRENT_CONTEXT(ctx);
copytexsubimage(ctx, 1, target, level, xoffset, 0, 0, x, y, width, 1);
}
void GLAPIENTRY
_mesa_CopyTexSubImage2D( GLenum target, GLint level,
GLint xoffset, GLint yoffset,
GLint x, GLint y, GLsizei width, GLsizei height )
{
GET_CURRENT_CONTEXT(ctx);
copytexsubimage(ctx, 2, target, level, xoffset, yoffset, 0, x, y,
width, height);
}
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