-/* $Id: enable.c,v 1.70 2002/10/16 17:57:51 brianp Exp $ */
+/**
+ * \file enable.c
+ * Enable/disable/query GL capabilities.
+ */
/*
* Mesa 3-D graphics library
- * Version: 4.1
+ * Version: 6.1
*
- * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2004 Brian Paul 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"),
*/
-#ifdef PC_HEADER
-#include "all.h"
-#else
#include "glheader.h"
#include "context.h"
#include "enable.h"
#include "light.h"
#include "macros.h"
-#include "mmath.h"
#include "simple_list.h"
#include "mtypes.h"
#include "enums.h"
#include "math/m_matrix.h"
#include "math/m_xform.h"
-#endif
+
#define CHECK_EXTENSION(EXTNAME, CAP) \
}
-
static void
client_state( GLcontext *ctx, GLenum cap, GLboolean state )
{
}
-
-void
+/**
+ * Enable GL capability.
+ *
+ * \param cap capability.
+ *
+ * \sa glEnable().
+ *
+ * Get's the current context, assures that we're outside glBegin()/glEnd() and
+ * calls client_state().
+ */
+void GLAPIENTRY
_mesa_EnableClientState( GLenum cap )
{
GET_CURRENT_CONTEXT(ctx);
}
-
-void
+/**
+ * Disable GL capability.
+ *
+ * \param cap capability.
+ *
+ * \sa glDisable().
+ *
+ * Get's the current context, assures that we're outside glBegin()/glEnd() and
+ * calls client_state().
+ */
+void GLAPIENTRY
_mesa_DisableClientState( GLenum cap )
{
GET_CURRENT_CONTEXT(ctx);
return; \
}
+#define CHECK_EXTENSION2(EXT1, EXT2, CAP) \
+ if (!ctx->Extensions.EXT1 && !ctx->Extensions.EXT2) { \
+ _mesa_error(ctx, GL_INVALID_ENUM, "gl%s(0x%x)", \
+ state ? "Enable" : "Disable", CAP); \
+ return; \
+ }
-/*
- * Perform glEnable and glDisable calls.
+
+
+/**
+ * Perform glEnable() and glDisable() calls.
+ *
+ * \param ctx GL context.
+ * \param cap capability.
+ * \param state whether to enable or disable the specified capability.
+ *
+ * Updates the current context and flushes the vertices as needed. For
+ * capabilities associated with extensions it verifies that those extensions
+ * are effectivly present before updating. Notifies the driver via
+ * dd_function_table::Enable.
*/
void _mesa_set_enable( GLcontext *ctx, GLenum cap, GLboolean state )
{
return;
FLUSH_VERTICES(ctx, _NEW_COLOR);
ctx->Color.BlendEnabled = state;
- /* The following needed to accomodate 1.0 RGB logic op blending */
- ctx->Color.ColorLogicOpEnabled =
- (ctx->Color.BlendEquation == GL_LOGIC_OP && state);
- break;
+ /* This is needed to support 1.1's RGB logic ops AND
+ * 1.0's blending logicops.
+ */
+ ctx->Color._LogicOpEnabled =
+ (ctx->Color.ColorLogicOpEnabled ||
+ (state && ctx->Color.BlendEquationRGB == GL_LOGIC_OP));
+ break;
+#if FEATURE_userclip
case GL_CLIP_PLANE0:
case GL_CLIP_PLANE1:
case GL_CLIP_PLANE2:
}
}
break;
+#endif
case GL_COLOR_MATERIAL:
if (ctx->Light.ColorMaterialEnabled == state)
return;
FLUSH_VERTICES(ctx, _NEW_LIGHT);
+ FLUSH_CURRENT(ctx, 0);
ctx->Light.ColorMaterialEnabled = state;
if (state) {
- FLUSH_CURRENT(ctx, 0);
_mesa_update_color_material( ctx,
ctx->Current.Attrib[VERT_ATTRIB_COLOR0] );
}
FLUSH_VERTICES(ctx, _NEW_POLYGON);
ctx->Polygon.CullFlag = state;
break;
+
+ case GL_CULL_VERTEX_EXT:
+ CHECK_EXTENSION(EXT_cull_vertex, cap);
+ if (ctx->Transform.CullVertexFlag == state)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
+ ctx->Transform.CullVertexFlag = state;
+ break;
+
case GL_DEPTH_TEST:
if (state && ctx->Visual.depthBits==0) {
_mesa_warning(ctx,"glEnable(GL_DEPTH_TEST) but no depth buffer");
else
ctx->_TriangleCaps &= ~DD_TRI_LIGHT_TWOSIDE;
- if ((ctx->Light.Enabled &&
- ctx->Light.Model.ColorControl==GL_SEPARATE_SPECULAR_COLOR)
- || ctx->Fog.ColorSumEnabled)
- ctx->_TriangleCaps |= DD_SEPARATE_SPECULAR;
- else
- ctx->_TriangleCaps &= ~DD_SEPARATE_SPECULAR;
-
break;
case GL_LINE_SMOOTH:
if (ctx->Line.SmoothFlag == state)
return;
FLUSH_VERTICES(ctx, _NEW_COLOR);
ctx->Color.ColorLogicOpEnabled = state;
+ /* This is needed to support 1.1's RGB logic ops AND
+ * 1.0's blending logicops.
+ */
+ ctx->Color._LogicOpEnabled =
+ (state || (ctx->Color.BlendEnabled &&
+ ctx->Color.BlendEquationRGB == GL_LOGIC_OP));
break;
case GL_MAP1_COLOR_4:
if (ctx->Eval.Map1Color4 == state)
texUnit->TexGenEnabled = newenabled;
break;
}
- break;
case GL_TEXTURE_GEN_S: {
GLuint unit = ctx->Texture.CurrentUnit;
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
texUnit->TexGenEnabled = newenabled;
break;
}
- break;
case GL_TEXTURE_GEN_T: {
GLuint unit = ctx->Texture.CurrentUnit;
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
texUnit->TexGenEnabled = newenabled;
break;
}
- break;
/*
* CLIENT STATE!!!
FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.PostColorMatrixColorTableEnabled = state;
break;
+ case GL_TEXTURE_COLOR_TABLE_SGI:
+ CHECK_EXTENSION(SGI_texture_color_table, cap);
+ if (ctx->Texture.Unit[ctx->Texture.CurrentUnit].ColorTableEnabled == state)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ ctx->Texture.Unit[ctx->Texture.CurrentUnit].ColorTableEnabled = state;
+ break;
/* GL_EXT_convolution */
case GL_CONVOLUTION_1D:
return;
FLUSH_VERTICES(ctx, _NEW_FOG);
ctx->Fog.ColorSumEnabled = state;
-
- if ((ctx->Light.Enabled &&
- ctx->Light.Model.ColorControl==GL_SEPARATE_SPECULAR_COLOR)
- || ctx->Fog.ColorSumEnabled)
- ctx->_TriangleCaps |= DD_SEPARATE_SPECULAR;
- else
- ctx->_TriangleCaps &= ~DD_SEPARATE_SPECULAR;
-
break;
/* GL_ARB_multisample */
/* GL_NV_point_sprite */
case GL_POINT_SPRITE_NV:
- CHECK_EXTENSION(NV_point_sprite, cap);
+ CHECK_EXTENSION2(NV_point_sprite, ARB_point_sprite, cap);
if (ctx->Point.PointSprite == state)
return;
FLUSH_VERTICES(ctx, _NEW_POINT);
#if FEATURE_NV_vertex_program
case GL_VERTEX_PROGRAM_NV:
- CHECK_EXTENSION(NV_vertex_program, cap);
+ CHECK_EXTENSION2(NV_vertex_program, ARB_vertex_program, cap);
if (ctx->VertexProgram.Enabled == state)
return;
- FLUSH_VERTICES(ctx, _NEW_TRANSFORM | _NEW_PROGRAM); /* XXX OK? */
+ FLUSH_VERTICES(ctx, _NEW_PROGRAM);
ctx->VertexProgram.Enabled = state;
break;
case GL_VERTEX_PROGRAM_POINT_SIZE_NV:
- CHECK_EXTENSION(NV_vertex_program, cap);
+ CHECK_EXTENSION2(NV_vertex_program, ARB_vertex_program, cap);
if (ctx->VertexProgram.PointSizeEnabled == state)
return;
- FLUSH_VERTICES(ctx, _NEW_POINT | _NEW_PROGRAM);
+ FLUSH_VERTICES(ctx, _NEW_PROGRAM);
ctx->VertexProgram.PointSizeEnabled = state;
break;
case GL_VERTEX_PROGRAM_TWO_SIDE_NV:
- CHECK_EXTENSION(NV_vertex_program, cap);
+ CHECK_EXTENSION2(NV_vertex_program, ARB_vertex_program, cap);
if (ctx->VertexProgram.TwoSideEnabled == state)
return;
- FLUSH_VERTICES(ctx, _NEW_PROGRAM); /* XXX OK? */
+ FLUSH_VERTICES(ctx, _NEW_PROGRAM);
ctx->VertexProgram.TwoSideEnabled = state;
break;
case GL_MAP1_VERTEX_ATTRIB0_4_NV:
break;
#endif /* FEATURE_NV_vertex_program */
+#if FEATURE_NV_fragment_program
+ case GL_FRAGMENT_PROGRAM_NV:
+ CHECK_EXTENSION(NV_fragment_program, cap);
+ if (ctx->FragmentProgram.Enabled == state)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PROGRAM);
+ ctx->FragmentProgram.Enabled = state;
+ break;
+#endif /* FEATURE_NV_fragment_program */
+
/* GL_NV_texture_rectangle */
case GL_TEXTURE_RECTANGLE_NV:
CHECK_EXTENSION(NV_texture_rectangle, cap);
return;
FLUSH_VERTICES(ctx, _NEW_STENCIL);
ctx->Stencil.TestTwoSide = state;
+ if (state) {
+ ctx->_TriangleCaps |= DD_TRI_TWOSTENCIL;
+ } else {
+ ctx->_TriangleCaps &= ~DD_TRI_TWOSTENCIL;
+ }
break;
+#if FEATURE_ARB_fragment_program
+ case GL_FRAGMENT_PROGRAM_ARB:
+ CHECK_EXTENSION(ARB_fragment_program, cap);
+ if (ctx->FragmentProgram.Enabled == state)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PROGRAM);
+ ctx->FragmentProgram.Enabled = state;
+ break;
+#endif /* FEATURE_ARB_fragment_program */
+
+ /* GL_EXT_depth_bounds_test */
+ case GL_DEPTH_BOUNDS_TEST_EXT:
+ CHECK_EXTENSION(EXT_depth_bounds_test, cap);
+ if (state && ctx->Visual.depthBits==0) {
+ _mesa_warning(ctx,
+ "glEnable(GL_DEPTH_BOUNDS_TEST_EXT) but no depth buffer");
+ return;
+ }
+ if (ctx->Depth.BoundsTest == state)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_DEPTH);
+ ctx->Depth.BoundsTest = state;
+ break;
+
+ /* GL_MESA_program_debug */
+ case GL_FRAGMENT_PROGRAM_CALLBACK_MESA:
+ CHECK_EXTENSION(MESA_program_debug, cap);
+ ctx->FragmentProgram.CallbackEnabled = state;
+ break;
+ case GL_VERTEX_PROGRAM_CALLBACK_MESA:
+ CHECK_EXTENSION(MESA_program_debug, cap);
+ ctx->VertexProgram.CallbackEnabled = state;
+ break;
+
+#if FEATURE_ATI_fragment_shader
+ case GL_FRAGMENT_SHADER_ATI:
+ CHECK_EXTENSION(ATI_fragment_shader, cap);
+ if (ctx->ATIFragmentShader.Enabled == state)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_PROGRAM);
+ ctx->ATIFragmentShader.Enabled = state;
+ break;
+#endif
default:
_mesa_error(ctx, GL_INVALID_ENUM,
"%s(0x%x)", state ? "glEnable" : "glDisable", cap);
}
-void
+/**
+ * Enable GL capability.
+ *
+ * \param cap capability.
+ *
+ * \sa glEnable().
+ *
+ * Get's the current context, assures that we're outside glBegin()/glEnd() and
+ * calls _mesa_set_enable().
+ */
+void GLAPIENTRY
_mesa_Enable( GLenum cap )
{
GET_CURRENT_CONTEXT(ctx);
}
-void
+/**
+ * Disable GL capability.
+ *
+ * \param cap capability.
+ *
+ * \sa glDisable().
+ *
+ * Get's the current context, assures that we're outside glBegin()/glEnd() and
+ * calls _mesa_set_enable().
+ */
+void GLAPIENTRY
_mesa_Disable( GLenum cap )
{
GET_CURRENT_CONTEXT(ctx);
}
-GLboolean
+/**
+ * Test whether a capability is enabled.
+ *
+ * \param cap capability.
+ *
+ * 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);
CHECK_EXTENSION(SGI_color_table);
return ctx->Pixel.PostColorMatrixColorTableEnabled;
+ /* GL_SGI_texture_color_table */
+ case GL_TEXTURE_COLOR_TABLE_SGI:
+ CHECK_EXTENSION(SGI_texture_color_table);
+ return ctx->Texture.Unit[ctx->Texture.CurrentUnit].ColorTableEnabled;
+
/* GL_EXT_convolution */
case GL_CONVOLUTION_1D:
CHECK_EXTENSION(EXT_convolution);
}
#endif /* FEATURE_NV_vertex_program */
+#if FEATURE_NV_fragment_program
+ case GL_FRAGMENT_PROGRAM_NV:
+ CHECK_EXTENSION(NV_fragment_program);
+ return ctx->FragmentProgram.Enabled;
+#endif /* FEATURE_NV_fragment_program */
+
/* GL_NV_texture_rectangle */
case GL_TEXTURE_RECTANGLE_NV:
CHECK_EXTENSION(NV_texture_rectangle);
CHECK_EXTENSION(EXT_stencil_two_side);
return ctx->Stencil.TestTwoSide;
+#if FEATURE_ARB_fragment_program
+ case GL_FRAGMENT_PROGRAM_ARB:
+ return ctx->FragmentProgram.Enabled;
+#endif /* FEATURE_ARB_fragment_program */
+
+ /* GL_EXT_depth_bounds_test */
+ case GL_DEPTH_BOUNDS_TEST_EXT:
+ CHECK_EXTENSION(EXT_depth_bounds_test);
+ return ctx->Depth.BoundsTest;
+
+ /* GL_MESA_program_debug */
+ case GL_FRAGMENT_PROGRAM_CALLBACK_MESA:
+ CHECK_EXTENSION(MESA_program_debug);
+ return ctx->FragmentProgram.CallbackEnabled;
+ case GL_VERTEX_PROGRAM_CALLBACK_MESA:
+ CHECK_EXTENSION(MESA_program_debug);
+ return ctx->VertexProgram.CallbackEnabled;
+#if FEATURE_ATI_fragment_shader
+ case GL_FRAGMENT_SHADER_ATI:
+ CHECK_EXTENSION(ATI_fragment_shader);
+ return ctx->ATIFragmentShader.Enabled;
+#endif /* FEATURE_ATI_fragment_shader */
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glIsEnabled(0x%x)", (int) cap);
return GL_FALSE;
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