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932 lines
28 KiB
C
932 lines
28 KiB
C
/**
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* \file enable.c
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* Enable/disable/query GL capabilities.
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*/
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/*
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* Mesa 3-D graphics library
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*
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* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <precomp.h>
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#define CHECK_EXTENSION(EXTNAME, CAP) \
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if (!ctx->Extensions.EXTNAME) { \
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goto invalid_enum_error; \
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}
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/**
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* Helper to enable/disable client-side state.
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*/
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static void
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client_state(struct gl_context *ctx, GLenum cap, GLboolean state)
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{
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GLbitfield64 flag;
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GLboolean *var;
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switch (cap) {
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case GL_VERTEX_ARRAY:
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var = &ctx->Array.VertexAttrib[VERT_ATTRIB_POS].Enabled;
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flag = VERT_BIT_POS;
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break;
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case GL_NORMAL_ARRAY:
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var = &ctx->Array.VertexAttrib[VERT_ATTRIB_NORMAL].Enabled;
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flag = VERT_BIT_NORMAL;
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break;
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case GL_COLOR_ARRAY:
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var = &ctx->Array.VertexAttrib[VERT_ATTRIB_COLOR].Enabled;
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flag = VERT_BIT_COLOR;
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break;
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case GL_INDEX_ARRAY:
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var = &ctx->Array.VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Enabled;
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flag = VERT_BIT_COLOR_INDEX;
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break;
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case GL_TEXTURE_COORD_ARRAY:
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var = &ctx->Array.VertexAttrib[VERT_ATTRIB_TEX].Enabled;
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flag = VERT_BIT_TEX;
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break;
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case GL_EDGE_FLAG_ARRAY:
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var = &ctx->Array.VertexAttrib[VERT_ATTRIB_EDGEFLAG].Enabled;
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flag = VERT_BIT_EDGEFLAG;
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break;
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case GL_FOG_COORDINATE_ARRAY_EXT:
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var = &ctx->Array.VertexAttrib[VERT_ATTRIB_FOG].Enabled;
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flag = VERT_BIT_FOG;
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break;
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default:
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goto invalid_enum_error;
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}
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if (*var == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_ARRAY);
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ctx->Array.NewState |= flag;
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_ae_invalidate_state(ctx, _NEW_ARRAY);
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*var = state;
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if (state)
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ctx->Array._Enabled |= flag;
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else
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ctx->Array._Enabled &= ~flag;
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if (ctx->Driver.Enable) {
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ctx->Driver.Enable( ctx, cap, state );
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}
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return;
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invalid_enum_error:
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_mesa_error(ctx, GL_INVALID_ENUM, "gl%sClientState(0x%x)",
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state ? "Enable" : "Disable", cap);
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}
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/**
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* Enable GL capability.
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* \param cap state to enable/disable.
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*
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* Get's the current context, assures that we're outside glBegin()/glEnd() and
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* calls client_state().
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*/
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void GLAPIENTRY
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_mesa_EnableClientState( GLenum cap )
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{
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GET_CURRENT_CONTEXT(ctx);
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ASSERT_OUTSIDE_BEGIN_END(ctx);
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client_state( ctx, cap, GL_TRUE );
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}
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/**
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* Disable GL capability.
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* \param cap state to enable/disable.
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*
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* Get's the current context, assures that we're outside glBegin()/glEnd() and
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* calls client_state().
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*/
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void GLAPIENTRY
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_mesa_DisableClientState( GLenum cap )
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{
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GET_CURRENT_CONTEXT(ctx);
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ASSERT_OUTSIDE_BEGIN_END(ctx);
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client_state( ctx, cap, GL_FALSE );
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}
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#undef CHECK_EXTENSION
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#define CHECK_EXTENSION(EXTNAME, CAP) \
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if (!ctx->Extensions.EXTNAME) { \
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goto invalid_enum_error; \
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}
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#define CHECK_EXTENSION2(EXT1, EXT2, CAP) \
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if (!ctx->Extensions.EXT1 && !ctx->Extensions.EXT2) { \
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goto invalid_enum_error; \
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}
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/**
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* Return pointer to current texture unit for setting/getting coordinate
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* state.
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* Note that we'll set GL_INVALID_OPERATION and return NULL if the active
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* texture unit is higher than the number of supported coordinate units.
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*/
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static inline struct gl_texture_unit *
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get_texcoord_unit(struct gl_context *ctx)
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{
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return &ctx->Texture.Unit;
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}
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/**
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* Helper function to enable or disable a texture target.
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* \param bit one of the TEXTURE_x_BIT values
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* \return GL_TRUE if state is changing or GL_FALSE if no change
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*/
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static GLboolean
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enable_texture(struct gl_context *ctx, GLboolean state, GLbitfield texBit)
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{
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struct gl_texture_unit *texUnit = &ctx->Texture.Unit;
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const GLbitfield newenabled = state
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? (texUnit->Enabled | texBit) : (texUnit->Enabled & ~texBit);
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if (texUnit->Enabled == newenabled)
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return GL_FALSE;
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FLUSH_VERTICES(ctx, _NEW_TEXTURE);
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texUnit->Enabled = newenabled;
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return GL_TRUE;
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}
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/**
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* Helper function to enable or disable state.
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*
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* \param ctx GL context.
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* \param cap the state to enable/disable
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* \param state whether to enable or disable the specified capability.
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*
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* Updates the current context and flushes the vertices as needed. For
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* capabilities associated with extensions it verifies that those extensions
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* are effectivly present before updating. Notifies the driver via
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* dd_function_table::Enable.
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*/
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void
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_mesa_set_enable(struct gl_context *ctx, GLenum cap, GLboolean state)
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{
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if (MESA_VERBOSE & VERBOSE_API)
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_mesa_debug(ctx, "%s %s (newstate is %x)\n",
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state ? "glEnable" : "glDisable",
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_mesa_lookup_enum_by_nr(cap),
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ctx->NewState);
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switch (cap) {
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case GL_ALPHA_TEST:
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if (ctx->Color.AlphaEnabled == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_COLOR);
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ctx->Color.AlphaEnabled = state;
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break;
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case GL_AUTO_NORMAL:
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if (ctx->Eval.AutoNormal == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_EVAL);
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ctx->Eval.AutoNormal = state;
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break;
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case GL_BLEND:
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{
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if (state != ctx->Color.BlendEnabled) {
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FLUSH_VERTICES(ctx, _NEW_COLOR);
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ctx->Color.BlendEnabled = state;
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}
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}
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break;
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#if FEATURE_userclip
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case GL_CLIP_DISTANCE0:
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case GL_CLIP_DISTANCE1:
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case GL_CLIP_DISTANCE2:
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case GL_CLIP_DISTANCE3:
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case GL_CLIP_DISTANCE4:
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case GL_CLIP_DISTANCE5:
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case GL_CLIP_DISTANCE6:
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case GL_CLIP_DISTANCE7:
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{
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const GLuint p = cap - GL_CLIP_DISTANCE0;
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if (p >= ctx->Const.MaxClipPlanes)
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goto invalid_enum_error;
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if ((ctx->Transform.ClipPlanesEnabled & (1 << p))
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== ((GLuint) state << p))
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return;
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FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
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if (state) {
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ctx->Transform.ClipPlanesEnabled |= (1 << p);
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_mesa_update_clip_plane(ctx, p);
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}
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else {
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ctx->Transform.ClipPlanesEnabled &= ~(1 << p);
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}
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}
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break;
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#endif
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case GL_COLOR_MATERIAL:
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if (ctx->Light.ColorMaterialEnabled == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_LIGHT);
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FLUSH_CURRENT(ctx, 0);
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ctx->Light.ColorMaterialEnabled = state;
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if (state) {
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_mesa_update_color_material( ctx,
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ctx->Current.Attrib[VERT_ATTRIB_COLOR] );
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}
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break;
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case GL_CULL_FACE:
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if (ctx->Polygon.CullFlag == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_POLYGON);
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ctx->Polygon.CullFlag = state;
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break;
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case GL_DEPTH_TEST:
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if (ctx->Depth.Test == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_DEPTH);
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ctx->Depth.Test = state;
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break;
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case GL_DITHER:
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if (ctx->Color.DitherFlag == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_COLOR);
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ctx->Color.DitherFlag = state;
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break;
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case GL_FOG:
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if (ctx->Fog.Enabled == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_FOG);
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ctx->Fog.Enabled = state;
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break;
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case GL_LIGHT0:
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case GL_LIGHT1:
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case GL_LIGHT2:
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case GL_LIGHT3:
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case GL_LIGHT4:
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case GL_LIGHT5:
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case GL_LIGHT6:
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case GL_LIGHT7:
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if (ctx->Light.Light[cap-GL_LIGHT0].Enabled == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_LIGHT);
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ctx->Light.Light[cap-GL_LIGHT0].Enabled = state;
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if (state) {
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insert_at_tail(&ctx->Light.EnabledList,
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&ctx->Light.Light[cap-GL_LIGHT0]);
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}
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else {
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remove_from_list(&ctx->Light.Light[cap-GL_LIGHT0]);
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}
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break;
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case GL_LIGHTING:
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if (ctx->Light.Enabled == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_LIGHT);
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ctx->Light.Enabled = state;
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if (ctx->Light.Enabled && ctx->Light.Model.TwoSide)
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ctx->_TriangleCaps |= DD_TRI_LIGHT_TWOSIDE;
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else
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ctx->_TriangleCaps &= ~DD_TRI_LIGHT_TWOSIDE;
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break;
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case GL_LINE_SMOOTH:
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if (ctx->Line.SmoothFlag == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_LINE);
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ctx->Line.SmoothFlag = state;
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ctx->_TriangleCaps ^= DD_LINE_SMOOTH;
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break;
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case GL_LINE_STIPPLE:
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if (ctx->Line.StippleFlag == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_LINE);
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ctx->Line.StippleFlag = state;
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ctx->_TriangleCaps ^= DD_LINE_STIPPLE;
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break;
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case GL_INDEX_LOGIC_OP:
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if (ctx->Color.IndexLogicOpEnabled == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_COLOR);
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ctx->Color.IndexLogicOpEnabled = state;
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break;
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case GL_COLOR_LOGIC_OP:
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if (ctx->Color.ColorLogicOpEnabled == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_COLOR);
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ctx->Color.ColorLogicOpEnabled = state;
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break;
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case GL_MAP1_COLOR_4:
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if (ctx->Eval.Map1Color4 == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_EVAL);
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ctx->Eval.Map1Color4 = state;
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break;
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case GL_MAP1_INDEX:
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if (ctx->Eval.Map1Index == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_EVAL);
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ctx->Eval.Map1Index = state;
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break;
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case GL_MAP1_NORMAL:
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if (ctx->Eval.Map1Normal == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_EVAL);
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ctx->Eval.Map1Normal = state;
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break;
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case GL_MAP1_TEXTURE_COORD_1:
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if (ctx->Eval.Map1TextureCoord1 == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_EVAL);
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ctx->Eval.Map1TextureCoord1 = state;
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break;
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case GL_MAP1_TEXTURE_COORD_2:
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if (ctx->Eval.Map1TextureCoord2 == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_EVAL);
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ctx->Eval.Map1TextureCoord2 = state;
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break;
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case GL_MAP1_TEXTURE_COORD_3:
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if (ctx->Eval.Map1TextureCoord3 == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_EVAL);
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ctx->Eval.Map1TextureCoord3 = state;
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break;
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case GL_MAP1_TEXTURE_COORD_4:
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if (ctx->Eval.Map1TextureCoord4 == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_EVAL);
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ctx->Eval.Map1TextureCoord4 = state;
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break;
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case GL_MAP1_VERTEX_3:
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if (ctx->Eval.Map1Vertex3 == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_EVAL);
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ctx->Eval.Map1Vertex3 = state;
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break;
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case GL_MAP1_VERTEX_4:
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if (ctx->Eval.Map1Vertex4 == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_EVAL);
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ctx->Eval.Map1Vertex4 = state;
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break;
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case GL_MAP2_COLOR_4:
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if (ctx->Eval.Map2Color4 == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_EVAL);
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ctx->Eval.Map2Color4 = state;
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break;
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case GL_MAP2_INDEX:
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if (ctx->Eval.Map2Index == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_EVAL);
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ctx->Eval.Map2Index = state;
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break;
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case GL_MAP2_NORMAL:
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if (ctx->Eval.Map2Normal == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_EVAL);
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ctx->Eval.Map2Normal = state;
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break;
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case GL_MAP2_TEXTURE_COORD_1:
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if (ctx->Eval.Map2TextureCoord1 == state)
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return;
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FLUSH_VERTICES(ctx, _NEW_EVAL);
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ctx->Eval.Map2TextureCoord1 = state;
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break;
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case GL_MAP2_TEXTURE_COORD_2:
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if (ctx->Eval.Map2TextureCoord2 == state)
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return;
|
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FLUSH_VERTICES(ctx, _NEW_EVAL);
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ctx->Eval.Map2TextureCoord2 = state;
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break;
|
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case GL_MAP2_TEXTURE_COORD_3:
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if (ctx->Eval.Map2TextureCoord3 == state)
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return;
|
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FLUSH_VERTICES(ctx, _NEW_EVAL);
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ctx->Eval.Map2TextureCoord3 = state;
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break;
|
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case GL_MAP2_TEXTURE_COORD_4:
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if (ctx->Eval.Map2TextureCoord4 == state)
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return;
|
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FLUSH_VERTICES(ctx, _NEW_EVAL);
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ctx->Eval.Map2TextureCoord4 = state;
|
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break;
|
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case GL_MAP2_VERTEX_3:
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if (ctx->Eval.Map2Vertex3 == state)
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return;
|
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FLUSH_VERTICES(ctx, _NEW_EVAL);
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ctx->Eval.Map2Vertex3 = state;
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break;
|
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case GL_MAP2_VERTEX_4:
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if (ctx->Eval.Map2Vertex4 == state)
|
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return;
|
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FLUSH_VERTICES(ctx, _NEW_EVAL);
|
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ctx->Eval.Map2Vertex4 = state;
|
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break;
|
|
case GL_NORMALIZE:
|
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if (ctx->Transform.Normalize == state)
|
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return;
|
|
FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
|
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ctx->Transform.Normalize = state;
|
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break;
|
|
case GL_POINT_SMOOTH:
|
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if (ctx->Point.SmoothFlag == state)
|
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return;
|
|
FLUSH_VERTICES(ctx, _NEW_POINT);
|
|
ctx->Point.SmoothFlag = state;
|
|
ctx->_TriangleCaps ^= DD_POINT_SMOOTH;
|
|
break;
|
|
case GL_POLYGON_SMOOTH:
|
|
if (ctx->Polygon.SmoothFlag == state)
|
|
return;
|
|
FLUSH_VERTICES(ctx, _NEW_POLYGON);
|
|
ctx->Polygon.SmoothFlag = state;
|
|
ctx->_TriangleCaps ^= DD_TRI_SMOOTH;
|
|
break;
|
|
case GL_POLYGON_STIPPLE:
|
|
if (ctx->Polygon.StippleFlag == state)
|
|
return;
|
|
FLUSH_VERTICES(ctx, _NEW_POLYGON);
|
|
ctx->Polygon.StippleFlag = state;
|
|
ctx->_TriangleCaps ^= DD_TRI_STIPPLE;
|
|
break;
|
|
case GL_POLYGON_OFFSET_POINT:
|
|
if (ctx->Polygon.OffsetPoint == state)
|
|
return;
|
|
FLUSH_VERTICES(ctx, _NEW_POLYGON);
|
|
ctx->Polygon.OffsetPoint = state;
|
|
break;
|
|
case GL_POLYGON_OFFSET_LINE:
|
|
if (ctx->Polygon.OffsetLine == state)
|
|
return;
|
|
FLUSH_VERTICES(ctx, _NEW_POLYGON);
|
|
ctx->Polygon.OffsetLine = state;
|
|
break;
|
|
case GL_POLYGON_OFFSET_FILL:
|
|
if (ctx->Polygon.OffsetFill == state)
|
|
return;
|
|
FLUSH_VERTICES(ctx, _NEW_POLYGON);
|
|
ctx->Polygon.OffsetFill = state;
|
|
break;
|
|
case GL_RESCALE_NORMAL_EXT:
|
|
if (ctx->Transform.RescaleNormals == state)
|
|
return;
|
|
FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
|
|
ctx->Transform.RescaleNormals = state;
|
|
break;
|
|
case GL_SCISSOR_TEST:
|
|
if (ctx->Scissor.Enabled == state)
|
|
return;
|
|
FLUSH_VERTICES(ctx, _NEW_SCISSOR);
|
|
ctx->Scissor.Enabled = state;
|
|
break;
|
|
case GL_STENCIL_TEST:
|
|
if (ctx->Stencil.Enabled == state)
|
|
return;
|
|
FLUSH_VERTICES(ctx, _NEW_STENCIL);
|
|
ctx->Stencil.Enabled = state;
|
|
break;
|
|
case GL_TEXTURE_1D:
|
|
if (!enable_texture(ctx, state, TEXTURE_1D_BIT)) {
|
|
return;
|
|
}
|
|
break;
|
|
case GL_TEXTURE_2D:
|
|
if (!enable_texture(ctx, state, TEXTURE_2D_BIT)) {
|
|
return;
|
|
}
|
|
break;
|
|
case GL_TEXTURE_GEN_S:
|
|
case GL_TEXTURE_GEN_T:
|
|
case GL_TEXTURE_GEN_R:
|
|
case GL_TEXTURE_GEN_Q:
|
|
{
|
|
struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);
|
|
if (texUnit) {
|
|
GLbitfield coordBit = S_BIT << (cap - GL_TEXTURE_GEN_S);
|
|
GLbitfield newenabled = texUnit->TexGenEnabled & ~coordBit;
|
|
if (state)
|
|
newenabled |= coordBit;
|
|
if (texUnit->TexGenEnabled == newenabled)
|
|
return;
|
|
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
|
|
texUnit->TexGenEnabled = newenabled;
|
|
}
|
|
}
|
|
break;
|
|
|
|
#if FEATURE_ES1
|
|
case GL_TEXTURE_GEN_STR_OES:
|
|
/* disable S, T, and R at the same time */
|
|
{
|
|
struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);
|
|
if (texUnit) {
|
|
GLuint newenabled =
|
|
texUnit->TexGenEnabled & ~STR_BITS;
|
|
if (state)
|
|
newenabled |= STR_BITS;
|
|
if (texUnit->TexGenEnabled == newenabled)
|
|
return;
|
|
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
|
|
texUnit->TexGenEnabled = newenabled;
|
|
}
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
/* client-side state */
|
|
case GL_VERTEX_ARRAY:
|
|
case GL_NORMAL_ARRAY:
|
|
case GL_COLOR_ARRAY:
|
|
case GL_INDEX_ARRAY:
|
|
case GL_TEXTURE_COORD_ARRAY:
|
|
case GL_EDGE_FLAG_ARRAY:
|
|
case GL_FOG_COORDINATE_ARRAY_EXT:
|
|
case GL_SECONDARY_COLOR_ARRAY_EXT:
|
|
case GL_POINT_SIZE_ARRAY_OES:
|
|
client_state( ctx, cap, state );
|
|
return;
|
|
|
|
/* GL_ARB_texture_cube_map */
|
|
case GL_TEXTURE_CUBE_MAP_ARB:
|
|
CHECK_EXTENSION(ARB_texture_cube_map, cap);
|
|
if (!enable_texture(ctx, state, TEXTURE_CUBE_BIT)) {
|
|
return;
|
|
}
|
|
break;
|
|
|
|
/* GL_ARB_multisample */
|
|
case GL_MULTISAMPLE_ARB:
|
|
if (ctx->Multisample.Enabled == state)
|
|
return;
|
|
FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);
|
|
ctx->Multisample.Enabled = state;
|
|
break;
|
|
case GL_SAMPLE_ALPHA_TO_COVERAGE_ARB:
|
|
if (ctx->Multisample.SampleAlphaToCoverage == state)
|
|
return;
|
|
FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);
|
|
ctx->Multisample.SampleAlphaToCoverage = state;
|
|
break;
|
|
case GL_SAMPLE_ALPHA_TO_ONE_ARB:
|
|
if (ctx->Multisample.SampleAlphaToOne == state)
|
|
return;
|
|
FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);
|
|
ctx->Multisample.SampleAlphaToOne = state;
|
|
break;
|
|
case GL_SAMPLE_COVERAGE_ARB:
|
|
if (ctx->Multisample.SampleCoverage == state)
|
|
return;
|
|
FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);
|
|
ctx->Multisample.SampleCoverage = state;
|
|
break;
|
|
case GL_SAMPLE_COVERAGE_INVERT_ARB:
|
|
if (ctx->Multisample.SampleCoverageInvert == state)
|
|
return;
|
|
FLUSH_VERTICES(ctx, _NEW_MULTISAMPLE);
|
|
ctx->Multisample.SampleCoverageInvert = state;
|
|
break;
|
|
|
|
/* GL_IBM_rasterpos_clip */
|
|
case GL_RASTER_POSITION_UNCLIPPED_IBM:
|
|
CHECK_EXTENSION(IBM_rasterpos_clip, cap);
|
|
if (ctx->Transform.RasterPositionUnclipped == state)
|
|
return;
|
|
FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
|
|
ctx->Transform.RasterPositionUnclipped = state;
|
|
break;
|
|
|
|
/* GL_NV_point_sprite */
|
|
case GL_POINT_SPRITE_NV:
|
|
CHECK_EXTENSION2(NV_point_sprite, ARB_point_sprite, cap);
|
|
if (ctx->Point.PointSprite == state)
|
|
return;
|
|
FLUSH_VERTICES(ctx, _NEW_POINT);
|
|
ctx->Point.PointSprite = state;
|
|
break;
|
|
|
|
/* GL_EXT_depth_bounds_test */
|
|
case GL_DEPTH_BOUNDS_TEST_EXT:
|
|
CHECK_EXTENSION(EXT_depth_bounds_test, cap);
|
|
if (ctx->Depth.BoundsTest == state)
|
|
return;
|
|
FLUSH_VERTICES(ctx, _NEW_DEPTH);
|
|
ctx->Depth.BoundsTest = state;
|
|
break;
|
|
|
|
default:
|
|
goto invalid_enum_error;
|
|
}
|
|
|
|
if (ctx->Driver.Enable) {
|
|
ctx->Driver.Enable( ctx, cap, state );
|
|
}
|
|
|
|
return;
|
|
|
|
invalid_enum_error:
|
|
_mesa_error(ctx, GL_INVALID_ENUM, "gl%s(0x%x)",
|
|
state ? "Enable" : "Disable", cap);
|
|
}
|
|
|
|
|
|
/**
|
|
* Enable GL capability. Called by glEnable()
|
|
* \param cap state to enable.
|
|
*/
|
|
void GLAPIENTRY
|
|
_mesa_Enable( GLenum cap )
|
|
{
|
|
GET_CURRENT_CONTEXT(ctx);
|
|
ASSERT_OUTSIDE_BEGIN_END(ctx);
|
|
|
|
_mesa_set_enable( ctx, cap, GL_TRUE );
|
|
}
|
|
|
|
|
|
/**
|
|
* Disable GL capability. Called by glDisable()
|
|
* \param cap state to disable.
|
|
*/
|
|
void GLAPIENTRY
|
|
_mesa_Disable( GLenum cap )
|
|
{
|
|
GET_CURRENT_CONTEXT(ctx);
|
|
ASSERT_OUTSIDE_BEGIN_END(ctx);
|
|
|
|
_mesa_set_enable( ctx, cap, GL_FALSE );
|
|
}
|
|
|
|
|
|
#undef CHECK_EXTENSION
|
|
#define CHECK_EXTENSION(EXTNAME) \
|
|
if (!ctx->Extensions.EXTNAME) { \
|
|
goto invalid_enum_error; \
|
|
}
|
|
|
|
#undef CHECK_EXTENSION2
|
|
#define CHECK_EXTENSION2(EXT1, EXT2) \
|
|
if (!ctx->Extensions.EXT1 && !ctx->Extensions.EXT2) { \
|
|
goto invalid_enum_error; \
|
|
}
|
|
|
|
|
|
/**
|
|
* Helper function to determine whether a texture target is enabled.
|
|
*/
|
|
static GLboolean
|
|
is_texture_enabled(struct gl_context *ctx, GLbitfield bit)
|
|
{
|
|
const struct gl_texture_unit *const texUnit =
|
|
&ctx->Texture.Unit;
|
|
return (texUnit->Enabled & bit) ? GL_TRUE : GL_FALSE;
|
|
}
|
|
|
|
|
|
/**
|
|
* Return simple enable/disable state.
|
|
*
|
|
* \param cap state variable to query.
|
|
*
|
|
* Returns the state of the specified capability from the current GL context.
|
|
* For the capabilities associated with extensions verifies that those
|
|
* extensions are effectively present before reporting.
|
|
*/
|
|
GLboolean GLAPIENTRY
|
|
_mesa_IsEnabled( GLenum cap )
|
|
{
|
|
GET_CURRENT_CONTEXT(ctx);
|
|
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
|
|
|
|
switch (cap) {
|
|
case GL_ALPHA_TEST:
|
|
return ctx->Color.AlphaEnabled;
|
|
case GL_AUTO_NORMAL:
|
|
return ctx->Eval.AutoNormal;
|
|
case GL_BLEND:
|
|
return ctx->Color.BlendEnabled & 1; /* return state for buffer[0] */
|
|
case GL_CLIP_DISTANCE0:
|
|
case GL_CLIP_DISTANCE1:
|
|
case GL_CLIP_DISTANCE2:
|
|
case GL_CLIP_DISTANCE3:
|
|
case GL_CLIP_DISTANCE4:
|
|
case GL_CLIP_DISTANCE5:
|
|
case GL_CLIP_DISTANCE6:
|
|
case GL_CLIP_DISTANCE7: {
|
|
const GLuint p = cap - GL_CLIP_DISTANCE0;
|
|
|
|
if (p >= ctx->Const.MaxClipPlanes)
|
|
goto invalid_enum_error;
|
|
|
|
return (ctx->Transform.ClipPlanesEnabled >> p) & 1;
|
|
}
|
|
case GL_COLOR_MATERIAL:
|
|
return ctx->Light.ColorMaterialEnabled;
|
|
case GL_CULL_FACE:
|
|
return ctx->Polygon.CullFlag;
|
|
case GL_DEPTH_TEST:
|
|
return ctx->Depth.Test;
|
|
case GL_DITHER:
|
|
return ctx->Color.DitherFlag;
|
|
case GL_FOG:
|
|
return ctx->Fog.Enabled;
|
|
case GL_LIGHTING:
|
|
return ctx->Light.Enabled;
|
|
case GL_LIGHT0:
|
|
case GL_LIGHT1:
|
|
case GL_LIGHT2:
|
|
case GL_LIGHT3:
|
|
case GL_LIGHT4:
|
|
case GL_LIGHT5:
|
|
case GL_LIGHT6:
|
|
case GL_LIGHT7:
|
|
return ctx->Light.Light[cap-GL_LIGHT0].Enabled;
|
|
case GL_LINE_SMOOTH:
|
|
return ctx->Line.SmoothFlag;
|
|
case GL_LINE_STIPPLE:
|
|
return ctx->Line.StippleFlag;
|
|
case GL_INDEX_LOGIC_OP:
|
|
return ctx->Color.IndexLogicOpEnabled;
|
|
case GL_COLOR_LOGIC_OP:
|
|
return ctx->Color.ColorLogicOpEnabled;
|
|
case GL_MAP1_COLOR_4:
|
|
return ctx->Eval.Map1Color4;
|
|
case GL_MAP1_INDEX:
|
|
return ctx->Eval.Map1Index;
|
|
case GL_MAP1_NORMAL:
|
|
return ctx->Eval.Map1Normal;
|
|
case GL_MAP1_TEXTURE_COORD_1:
|
|
return ctx->Eval.Map1TextureCoord1;
|
|
case GL_MAP1_TEXTURE_COORD_2:
|
|
return ctx->Eval.Map1TextureCoord2;
|
|
case GL_MAP1_TEXTURE_COORD_3:
|
|
return ctx->Eval.Map1TextureCoord3;
|
|
case GL_MAP1_TEXTURE_COORD_4:
|
|
return ctx->Eval.Map1TextureCoord4;
|
|
case GL_MAP1_VERTEX_3:
|
|
return ctx->Eval.Map1Vertex3;
|
|
case GL_MAP1_VERTEX_4:
|
|
return ctx->Eval.Map1Vertex4;
|
|
case GL_MAP2_COLOR_4:
|
|
return ctx->Eval.Map2Color4;
|
|
case GL_MAP2_INDEX:
|
|
return ctx->Eval.Map2Index;
|
|
case GL_MAP2_NORMAL:
|
|
return ctx->Eval.Map2Normal;
|
|
case GL_MAP2_TEXTURE_COORD_1:
|
|
return ctx->Eval.Map2TextureCoord1;
|
|
case GL_MAP2_TEXTURE_COORD_2:
|
|
return ctx->Eval.Map2TextureCoord2;
|
|
case GL_MAP2_TEXTURE_COORD_3:
|
|
return ctx->Eval.Map2TextureCoord3;
|
|
case GL_MAP2_TEXTURE_COORD_4:
|
|
return ctx->Eval.Map2TextureCoord4;
|
|
case GL_MAP2_VERTEX_3:
|
|
return ctx->Eval.Map2Vertex3;
|
|
case GL_MAP2_VERTEX_4:
|
|
return ctx->Eval.Map2Vertex4;
|
|
case GL_NORMALIZE:
|
|
return ctx->Transform.Normalize;
|
|
case GL_POINT_SMOOTH:
|
|
return ctx->Point.SmoothFlag;
|
|
case GL_POLYGON_SMOOTH:
|
|
return ctx->Polygon.SmoothFlag;
|
|
case GL_POLYGON_STIPPLE:
|
|
return ctx->Polygon.StippleFlag;
|
|
case GL_POLYGON_OFFSET_POINT:
|
|
return ctx->Polygon.OffsetPoint;
|
|
case GL_POLYGON_OFFSET_LINE:
|
|
return ctx->Polygon.OffsetLine;
|
|
case GL_POLYGON_OFFSET_FILL:
|
|
return ctx->Polygon.OffsetFill;
|
|
case GL_RESCALE_NORMAL_EXT:
|
|
return ctx->Transform.RescaleNormals;
|
|
case GL_SCISSOR_TEST:
|
|
return ctx->Scissor.Enabled;
|
|
case GL_STENCIL_TEST:
|
|
return ctx->Stencil.Enabled;
|
|
case GL_TEXTURE_1D:
|
|
return is_texture_enabled(ctx, TEXTURE_1D_BIT);
|
|
case GL_TEXTURE_2D:
|
|
return is_texture_enabled(ctx, TEXTURE_2D_BIT);
|
|
case GL_TEXTURE_GEN_S:
|
|
case GL_TEXTURE_GEN_T:
|
|
case GL_TEXTURE_GEN_R:
|
|
case GL_TEXTURE_GEN_Q:
|
|
{
|
|
const struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);
|
|
if (texUnit) {
|
|
GLbitfield coordBit = S_BIT << (cap - GL_TEXTURE_GEN_S);
|
|
return (texUnit->TexGenEnabled & coordBit) ? GL_TRUE : GL_FALSE;
|
|
}
|
|
}
|
|
return GL_FALSE;
|
|
#if FEATURE_ES1
|
|
case GL_TEXTURE_GEN_STR_OES:
|
|
{
|
|
const struct gl_texture_unit *texUnit = get_texcoord_unit(ctx);
|
|
if (texUnit) {
|
|
return (texUnit->TexGenEnabled & STR_BITS) == STR_BITS
|
|
? GL_TRUE : GL_FALSE;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* client-side state */
|
|
case GL_VERTEX_ARRAY:
|
|
return (ctx->Array.VertexAttrib[VERT_ATTRIB_POS].Enabled != 0);
|
|
case GL_NORMAL_ARRAY:
|
|
return (ctx->Array.VertexAttrib[VERT_ATTRIB_NORMAL].Enabled != 0);
|
|
case GL_COLOR_ARRAY:
|
|
return (ctx->Array.VertexAttrib[VERT_ATTRIB_COLOR].Enabled != 0);
|
|
case GL_INDEX_ARRAY:
|
|
return (ctx->Array.VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Enabled != 0);
|
|
case GL_TEXTURE_COORD_ARRAY:
|
|
return (ctx->Array.VertexAttrib[VERT_ATTRIB_TEX]
|
|
.Enabled != 0);
|
|
case GL_EDGE_FLAG_ARRAY:
|
|
return (ctx->Array.VertexAttrib[VERT_ATTRIB_EDGEFLAG].Enabled != 0);
|
|
case GL_FOG_COORDINATE_ARRAY_EXT:
|
|
CHECK_EXTENSION(EXT_fog_coord);
|
|
return (ctx->Array.VertexAttrib[VERT_ATTRIB_FOG].Enabled != 0);
|
|
#if FEATURE_point_size_array
|
|
case GL_POINT_SIZE_ARRAY_OES:
|
|
return (ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POINT_SIZE].Enabled != 0);
|
|
#endif
|
|
|
|
/* GL_ARB_texture_cube_map */
|
|
case GL_TEXTURE_CUBE_MAP_ARB:
|
|
CHECK_EXTENSION(ARB_texture_cube_map);
|
|
return is_texture_enabled(ctx, TEXTURE_CUBE_BIT);
|
|
|
|
/* GL_ARB_multisample */
|
|
case GL_MULTISAMPLE_ARB:
|
|
return ctx->Multisample.Enabled;
|
|
case GL_SAMPLE_ALPHA_TO_COVERAGE_ARB:
|
|
return ctx->Multisample.SampleAlphaToCoverage;
|
|
case GL_SAMPLE_ALPHA_TO_ONE_ARB:
|
|
return ctx->Multisample.SampleAlphaToOne;
|
|
case GL_SAMPLE_COVERAGE_ARB:
|
|
return ctx->Multisample.SampleCoverage;
|
|
case GL_SAMPLE_COVERAGE_INVERT_ARB:
|
|
return ctx->Multisample.SampleCoverageInvert;
|
|
|
|
/* GL_IBM_rasterpos_clip */
|
|
case GL_RASTER_POSITION_UNCLIPPED_IBM:
|
|
CHECK_EXTENSION(IBM_rasterpos_clip);
|
|
return ctx->Transform.RasterPositionUnclipped;
|
|
|
|
/* GL_NV_point_sprite */
|
|
case GL_POINT_SPRITE_NV:
|
|
CHECK_EXTENSION2(NV_point_sprite, ARB_point_sprite)
|
|
return ctx->Point.PointSprite;
|
|
|
|
/* GL_EXT_depth_bounds_test */
|
|
case GL_DEPTH_BOUNDS_TEST_EXT:
|
|
CHECK_EXTENSION(EXT_depth_bounds_test);
|
|
return ctx->Depth.BoundsTest;
|
|
|
|
default:
|
|
goto invalid_enum_error;
|
|
}
|
|
|
|
return GL_FALSE;
|
|
|
|
invalid_enum_error:
|
|
_mesa_error(ctx, GL_INVALID_ENUM, "glIsEnabled(0x%x)", (int) cap);
|
|
return GL_FALSE;
|
|
}
|