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

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/*
* Mesa 3-D graphics library
* Version: 7.6
*
* 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.
*/
#include <precomp.h>
/** Used to indicate which GL datatypes are accepted by each of the
* glVertex/Color/Attrib/EtcPointer() functions.
*/
#define BOOL_BIT 0x1
#define BYTE_BIT 0x2
#define UNSIGNED_BYTE_BIT 0x4
#define SHORT_BIT 0x8
#define UNSIGNED_SHORT_BIT 0x10
#define INT_BIT 0x20
#define UNSIGNED_INT_BIT 0x40
#define HALF_BIT 0x80
#define FLOAT_BIT 0x100
#define DOUBLE_BIT 0x200
/** Convert GL datatype enum into a <type>_BIT value seen above */
static GLbitfield
type_to_bit(const struct gl_context *ctx, GLenum type)
{
switch (type) {
case GL_BOOL:
return BOOL_BIT;
case GL_BYTE:
return BYTE_BIT;
case GL_UNSIGNED_BYTE:
return UNSIGNED_BYTE_BIT;
case GL_SHORT:
return SHORT_BIT;
case GL_UNSIGNED_SHORT:
return UNSIGNED_SHORT_BIT;
case GL_INT:
return INT_BIT;
case GL_UNSIGNED_INT:
return UNSIGNED_INT_BIT;
case GL_FLOAT:
return FLOAT_BIT;
case GL_DOUBLE:
return DOUBLE_BIT;
default:
return 0;
}
}
/**
* Do error checking and update state for glVertex/Color/TexCoord/...Pointer
* functions.
*
* \param func name of calling function used for error reporting
* \param attrib the attribute array index to update
* \param legalTypes bitmask of *_BIT above indicating legal datatypes
* \param sizeMin min allowable size value
* \param sizeMax max allowable size value
* \param size components per element (1, 2, 3 or 4)
* \param type datatype of each component (GL_FLOAT, GL_INT, etc)
* \param stride stride between elements, in elements
* \param normalized are integer types converted to floats in [-1, 1]?
* \param integer integer-valued values (will not be normalized to [-1,1])
* \param ptr the address (or offset inside VBO) of the array data
*/
static void
update_array(struct gl_context *ctx,
const char *func,
GLuint attrib, GLbitfield legalTypesMask,
GLint sizeMin, GLint sizeMax,
GLint size, GLenum type, GLsizei stride,
GLboolean normalized, GLboolean integer,
const GLvoid *ptr)
{
struct gl_client_array *array;
GLbitfield typeBit;
GLsizei elementSize;
typeBit = type_to_bit(ctx, type);
if (typeBit == 0x0 || (typeBit & legalTypesMask) == 0x0) {
_mesa_error(ctx, GL_INVALID_ENUM, "%s(type = %s)",
func, _mesa_lookup_enum_by_nr(type));
return;
}
/* Do size parameter checking. */
if (size < sizeMin || size > sizeMax || size > 4) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(size=%d)", func, size);
return;
}
ASSERT(size <= 4);
if (stride < 0) {
_mesa_error( ctx, GL_INVALID_VALUE, "%s(stride=%d)", func, stride );
return;
}
elementSize = _mesa_sizeof_type(type) * size;
array = &ctx->Array.VertexAttrib[attrib];
array->Size = size;
array->Type = type;
array->Stride = stride;
array->StrideB = stride ? stride : elementSize;
array->Normalized = normalized;
array->Integer = integer;
array->Ptr = (const GLubyte *) ptr;
array->_ElementSize = elementSize;
ctx->NewState |= _NEW_ARRAY;
ctx->Array.NewState |= VERT_BIT(attrib);
}
void GLAPIENTRY
_mesa_VertexPointer(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr)
{
GLbitfield legalTypes = (SHORT_BIT | INT_BIT | FLOAT_BIT |
DOUBLE_BIT | HALF_BIT);
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
update_array(ctx, "glVertexPointer", VERT_ATTRIB_POS,
legalTypes, 2, 4,
size, type, stride, GL_FALSE, GL_FALSE, ptr);
}
void GLAPIENTRY
_mesa_NormalPointer(GLenum type, GLsizei stride, const GLvoid *ptr )
{
const GLbitfield legalTypes = (BYTE_BIT | SHORT_BIT | INT_BIT |
HALF_BIT | FLOAT_BIT | DOUBLE_BIT);
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
update_array(ctx, "glNormalPointer", VERT_ATTRIB_NORMAL,
legalTypes, 3, 3,
3, type, stride, GL_TRUE, GL_FALSE, ptr);
}
void GLAPIENTRY
_mesa_ColorPointer(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr)
{
const GLbitfield legalTypes = (BYTE_BIT | UNSIGNED_BYTE_BIT |
SHORT_BIT | UNSIGNED_SHORT_BIT |
INT_BIT | UNSIGNED_INT_BIT |
HALF_BIT | FLOAT_BIT | DOUBLE_BIT);
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
update_array(ctx, "glColorPointer", VERT_ATTRIB_COLOR,
legalTypes, 3, 4,
size, type, stride, GL_TRUE, GL_FALSE, ptr);
}
void GLAPIENTRY
_mesa_FogCoordPointerEXT(GLenum type, GLsizei stride, const GLvoid *ptr)
{
const GLbitfield legalTypes = (HALF_BIT | FLOAT_BIT | DOUBLE_BIT);
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
update_array(ctx, "glFogCoordPointer", VERT_ATTRIB_FOG,
legalTypes, 1, 1,
1, type, stride, GL_FALSE, GL_FALSE, ptr);
}
void GLAPIENTRY
_mesa_IndexPointer(GLenum type, GLsizei stride, const GLvoid *ptr)
{
const GLbitfield legalTypes = (UNSIGNED_BYTE_BIT | SHORT_BIT | INT_BIT |
FLOAT_BIT | DOUBLE_BIT);
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
update_array(ctx, "glIndexPointer", VERT_ATTRIB_COLOR_INDEX,
legalTypes, 1, 1,
1, type, stride, GL_FALSE, GL_FALSE, ptr);
}
void GLAPIENTRY
_mesa_TexCoordPointer(GLint size, GLenum type, GLsizei stride,
const GLvoid *ptr)
{
GLbitfield legalTypes = (SHORT_BIT | INT_BIT |
HALF_BIT | FLOAT_BIT | DOUBLE_BIT);
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
update_array(ctx, "glTexCoordPointer", VERT_ATTRIB_TEX,
legalTypes, 1, 4,
size, type, stride, GL_FALSE, GL_FALSE,
ptr);
}
void GLAPIENTRY
_mesa_EdgeFlagPointer(GLsizei stride, const GLvoid *ptr)
{
const GLbitfield legalTypes = UNSIGNED_BYTE_BIT;
/* see table 2.4 edits in GL_EXT_gpu_shader4 spec: */
const GLboolean integer = GL_TRUE;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
update_array(ctx, "glEdgeFlagPointer", VERT_ATTRIB_EDGEFLAG,
legalTypes, 1, 1,
1, GL_UNSIGNED_BYTE, stride, GL_FALSE, integer, ptr);
}
void GLAPIENTRY
_mesa_VertexPointerEXT(GLint size, GLenum type, GLsizei stride,
GLsizei count, const GLvoid *ptr)
{
(void) count;
_mesa_VertexPointer(size, type, stride, ptr);
}
void GLAPIENTRY
_mesa_NormalPointerEXT(GLenum type, GLsizei stride, GLsizei count,
const GLvoid *ptr)
{
(void) count;
_mesa_NormalPointer(type, stride, ptr);
}
void GLAPIENTRY
_mesa_ColorPointerEXT(GLint size, GLenum type, GLsizei stride, GLsizei count,
const GLvoid *ptr)
{
(void) count;
_mesa_ColorPointer(size, type, stride, ptr);
}
void GLAPIENTRY
_mesa_IndexPointerEXT(GLenum type, GLsizei stride, GLsizei count,
const GLvoid *ptr)
{
(void) count;
_mesa_IndexPointer(type, stride, ptr);
}
void GLAPIENTRY
_mesa_TexCoordPointerEXT(GLint size, GLenum type, GLsizei stride,
GLsizei count, const GLvoid *ptr)
{
(void) count;
_mesa_TexCoordPointer(size, type, stride, ptr);
}
void GLAPIENTRY
_mesa_EdgeFlagPointerEXT(GLsizei stride, GLsizei count, const GLboolean *ptr)
{
(void) count;
_mesa_EdgeFlagPointer(stride, ptr);
}
void GLAPIENTRY
_mesa_InterleavedArrays(GLenum format, GLsizei stride, const GLvoid *pointer)
{
GET_CURRENT_CONTEXT(ctx);
GLboolean tflag, cflag, nflag; /* enable/disable flags */
GLint tcomps, ccomps, vcomps; /* components per texcoord, color, vertex */
GLenum ctype = 0; /* color type */
GLint coffset = 0, noffset = 0, voffset;/* color, normal, vertex offsets */
const GLint toffset = 0; /* always zero */
GLint defstride; /* default stride */
GLint c, f;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
f = sizeof(GLfloat);
c = f * ((4 * sizeof(GLubyte) + (f - 1)) / f);
if (stride < 0) {
_mesa_error( ctx, GL_INVALID_VALUE, "glInterleavedArrays(stride)" );
return;
}
switch (format) {
case GL_V2F:
tflag = GL_FALSE; cflag = GL_FALSE; nflag = GL_FALSE;
tcomps = 0; ccomps = 0; vcomps = 2;
voffset = 0;
defstride = 2*f;
break;
case GL_V3F:
tflag = GL_FALSE; cflag = GL_FALSE; nflag = GL_FALSE;
tcomps = 0; ccomps = 0; vcomps = 3;
voffset = 0;
defstride = 3*f;
break;
case GL_C4UB_V2F:
tflag = GL_FALSE; cflag = GL_TRUE; nflag = GL_FALSE;
tcomps = 0; ccomps = 4; vcomps = 2;
ctype = GL_UNSIGNED_BYTE;
coffset = 0;
voffset = c;
defstride = c + 2*f;
break;
case GL_C4UB_V3F:
tflag = GL_FALSE; cflag = GL_TRUE; nflag = GL_FALSE;
tcomps = 0; ccomps = 4; vcomps = 3;
ctype = GL_UNSIGNED_BYTE;
coffset = 0;
voffset = c;
defstride = c + 3*f;
break;
case GL_C3F_V3F:
tflag = GL_FALSE; cflag = GL_TRUE; nflag = GL_FALSE;
tcomps = 0; ccomps = 3; vcomps = 3;
ctype = GL_FLOAT;
coffset = 0;
voffset = 3*f;
defstride = 6*f;
break;
case GL_N3F_V3F:
tflag = GL_FALSE; cflag = GL_FALSE; nflag = GL_TRUE;
tcomps = 0; ccomps = 0; vcomps = 3;
noffset = 0;
voffset = 3*f;
defstride = 6*f;
break;
case GL_C4F_N3F_V3F:
tflag = GL_FALSE; cflag = GL_TRUE; nflag = GL_TRUE;
tcomps = 0; ccomps = 4; vcomps = 3;
ctype = GL_FLOAT;
coffset = 0;
noffset = 4*f;
voffset = 7*f;
defstride = 10*f;
break;
case GL_T2F_V3F:
tflag = GL_TRUE; cflag = GL_FALSE; nflag = GL_FALSE;
tcomps = 2; ccomps = 0; vcomps = 3;
voffset = 2*f;
defstride = 5*f;
break;
case GL_T4F_V4F:
tflag = GL_TRUE; cflag = GL_FALSE; nflag = GL_FALSE;
tcomps = 4; ccomps = 0; vcomps = 4;
voffset = 4*f;
defstride = 8*f;
break;
case GL_T2F_C4UB_V3F:
tflag = GL_TRUE; cflag = GL_TRUE; nflag = GL_FALSE;
tcomps = 2; ccomps = 4; vcomps = 3;
ctype = GL_UNSIGNED_BYTE;
coffset = 2*f;
voffset = c+2*f;
defstride = c+5*f;
break;
case GL_T2F_C3F_V3F:
tflag = GL_TRUE; cflag = GL_TRUE; nflag = GL_FALSE;
tcomps = 2; ccomps = 3; vcomps = 3;
ctype = GL_FLOAT;
coffset = 2*f;
voffset = 5*f;
defstride = 8*f;
break;
case GL_T2F_N3F_V3F:
tflag = GL_TRUE; cflag = GL_FALSE; nflag = GL_TRUE;
tcomps = 2; ccomps = 0; vcomps = 3;
noffset = 2*f;
voffset = 5*f;
defstride = 8*f;
break;
case GL_T2F_C4F_N3F_V3F:
tflag = GL_TRUE; cflag = GL_TRUE; nflag = GL_TRUE;
tcomps = 2; ccomps = 4; vcomps = 3;
ctype = GL_FLOAT;
coffset = 2*f;
noffset = 6*f;
voffset = 9*f;
defstride = 12*f;
break;
case GL_T4F_C4F_N3F_V4F:
tflag = GL_TRUE; cflag = GL_TRUE; nflag = GL_TRUE;
tcomps = 4; ccomps = 4; vcomps = 4;
ctype = GL_FLOAT;
coffset = 4*f;
noffset = 8*f;
voffset = 11*f;
defstride = 15*f;
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glInterleavedArrays(format)" );
return;
}
if (stride==0) {
stride = defstride;
}
_mesa_DisableClientState( GL_EDGE_FLAG_ARRAY );
_mesa_DisableClientState( GL_INDEX_ARRAY );
/* XXX also disable secondary color and generic arrays? */
/* Texcoords */
if (tflag) {
_mesa_EnableClientState( GL_TEXTURE_COORD_ARRAY );
_mesa_TexCoordPointer( tcomps, GL_FLOAT, stride,
(GLubyte *) pointer + toffset );
}
else {
_mesa_DisableClientState( GL_TEXTURE_COORD_ARRAY );
}
/* Color */
if (cflag) {
_mesa_EnableClientState( GL_COLOR_ARRAY );
_mesa_ColorPointer( ccomps, ctype, stride,
(GLubyte *) pointer + coffset );
}
else {
_mesa_DisableClientState( GL_COLOR_ARRAY );
}
/* Normals */
if (nflag) {
_mesa_EnableClientState( GL_NORMAL_ARRAY );
_mesa_NormalPointer( GL_FLOAT, stride, (GLubyte *) pointer + noffset );
}
else {
_mesa_DisableClientState( GL_NORMAL_ARRAY );
}
/* Vertices */
_mesa_EnableClientState( GL_VERTEX_ARRAY );
_mesa_VertexPointer( vcomps, GL_FLOAT, stride,
(GLubyte *) pointer + voffset );
}
void GLAPIENTRY
_mesa_LockArraysEXT(GLint first, GLsizei count)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glLockArrays %d %d\n", first, count);
if (first < 0) {
_mesa_error( ctx, GL_INVALID_VALUE, "glLockArraysEXT(first)" );
return;
}
if (count <= 0) {
_mesa_error( ctx, GL_INVALID_VALUE, "glLockArraysEXT(count)" );
return;
}
if (ctx->Array.LockCount != 0) {
_mesa_error( ctx, GL_INVALID_OPERATION, "glLockArraysEXT(reentry)" );
return;
}
ctx->Array.LockFirst = first;
ctx->Array.LockCount = count;
ctx->NewState |= _NEW_ARRAY;
ctx->Array.NewState |= VERT_BIT_ALL;
}
void GLAPIENTRY
_mesa_UnlockArraysEXT( void )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glUnlockArrays\n");
if (ctx->Array.LockCount == 0) {
_mesa_error( ctx, GL_INVALID_OPERATION, "glUnlockArraysEXT(reexit)" );
return;
}
ctx->Array.LockFirst = 0;
ctx->Array.LockCount = 0;
ctx->NewState |= _NEW_ARRAY;
ctx->Array.NewState |= VERT_BIT_ALL;
}
/* GL_IBM_multimode_draw_arrays */
void GLAPIENTRY
_mesa_MultiModeDrawArraysIBM( const GLenum * mode, const GLint * first,
const GLsizei * count,
GLsizei primcount, GLint modestride )
{
GET_CURRENT_CONTEXT(ctx);
GLint i;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
for ( i = 0 ; i < primcount ; i++ ) {
if ( count[i] > 0 ) {
GLenum m = *((GLenum *) ((GLubyte *) mode + i * modestride));
CALL_DrawArrays(ctx->Exec, ( m, first[i], count[i] ));
}
}
}
/* GL_IBM_multimode_draw_arrays */
void GLAPIENTRY
_mesa_MultiModeDrawElementsIBM( const GLenum * mode, const GLsizei * count,
GLenum type, const GLvoid * const * indices,
GLsizei primcount, GLint modestride )
{
GET_CURRENT_CONTEXT(ctx);
GLint i;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
/* XXX not sure about ARB_vertex_buffer_object handling here */
for ( i = 0 ; i < primcount ; i++ ) {
if ( count[i] > 0 ) {
GLenum m = *((GLenum *) ((GLubyte *) mode + i * modestride));
CALL_DrawElements(ctx->Exec, ( m, count[i], type, indices[i] ));
}
}
}
/**
* Copy one client vertex array to another.
*/
void
_mesa_copy_client_array(struct gl_context *ctx,
struct gl_client_array *dst,
struct gl_client_array *src)
{
dst->Size = src->Size;
dst->Type = src->Type;
dst->Stride = src->Stride;
dst->StrideB = src->StrideB;
dst->Ptr = src->Ptr;
dst->Enabled = src->Enabled;
dst->Normalized = src->Normalized;
dst->Integer = src->Integer;
dst->_ElementSize = src->_ElementSize;
_mesa_reference_buffer_object(ctx, &dst->BufferObj, src->BufferObj);
dst->_MaxElement = src->_MaxElement;
}
static void
init_array(struct gl_context *ctx,
struct gl_client_array *array, GLint size, GLint type)
{
array->Size = size;
array->Type = type;
array->Stride = 0;
array->StrideB = 0;
array->Ptr = NULL;
array->Enabled = GL_FALSE;
array->Normalized = GL_FALSE;
array->Integer = GL_FALSE;
array->_ElementSize = size * _mesa_sizeof_type(type);
/* Vertex array buffers */
_mesa_reference_buffer_object(ctx, &array->BufferObj,
ctx->Shared->NullBufferObj);
}
/**
* Initialize vertex array state for given context.
*/
void
_mesa_init_varray(struct gl_context *ctx, struct gl_array_attrib *array)
{
GLuint i;
/* Init the individual arrays */
for (i = 0; i < Elements(array->VertexAttrib); i++) {
switch (i) {
case VERT_ATTRIB_WEIGHT:
init_array(ctx, &array->VertexAttrib[VERT_ATTRIB_WEIGHT], 1, GL_FLOAT);
break;
case VERT_ATTRIB_NORMAL:
init_array(ctx, &array->VertexAttrib[VERT_ATTRIB_NORMAL], 3, GL_FLOAT);
break;
case VERT_ATTRIB_FOG:
init_array(ctx, &array->VertexAttrib[VERT_ATTRIB_FOG], 1, GL_FLOAT);
break;
case VERT_ATTRIB_COLOR_INDEX:
init_array(ctx, &array->VertexAttrib[VERT_ATTRIB_COLOR_INDEX], 1, GL_FLOAT);
break;
case VERT_ATTRIB_EDGEFLAG:
init_array(ctx, &array->VertexAttrib[VERT_ATTRIB_EDGEFLAG], 1, GL_BOOL);
break;
default:
init_array(ctx, &array->VertexAttrib[i], 4, GL_FLOAT);
break;
}
}
}
/**
* Free vertex array state for given context.
*/
void
_mesa_free_varray_data(struct gl_context *ctx, struct gl_array_attrib* array)
{
GLuint i;
/* Uninit the individual arrays */
for (i = 0; i < Elements(array->VertexAttrib); i++)
{
_mesa_reference_buffer_object(ctx, &array->VertexAttrib[i].BufferObj, NULL);
memset(&array->VertexAttrib[i], 0, sizeof(struct gl_client_array));
}
}
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