From da238ee06a8d169eb590aa5e50998136f1b5aba5 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Thu, 13 Apr 2006 19:21:58 +0000 Subject: Fix comment about MaxTextureUnits, needs to be min of coord and image units. See bug 5994. Also add a few assertions. Use MaxTextureUnits in get.c code. There's probably other places where we need to clean-up the usage of the MaxTexture[Coord/Image]Units constants. --- src/mesa/main/config.h | 6 +++++- src/mesa/main/context.c | 9 +++++++-- src/mesa/main/get.c | 6 +++--- src/mesa/main/get_gen.py | 3 +-- src/mesa/main/mtypes.h | 2 +- 5 files changed, 17 insertions(+), 9 deletions(-) (limited to 'src') diff --git a/src/mesa/main/config.h b/src/mesa/main/config.h index af4e7aad05..95555cb7d4 100644 --- a/src/mesa/main/config.h +++ b/src/mesa/main/config.h @@ -108,7 +108,11 @@ /** Maximum rectangular texture size - GL_NV_texture_rectangle */ #define MAX_TEXTURE_RECT_SIZE 2048 -/** Number of texture units - GL_ARB_multitexture */ +/** Number of texture units - GL_ARB_multitexture + * This needs to be the larger of MAX_TEXTURE_COORD_UNITS and + * MAX_TEXTURE_IMAGE_UNITS seen below, since MAX_TEXTURE_UNITS is used + * to dimension some arrays that store both coord and image data. +*/ #define MAX_TEXTURE_UNITS 8 /*@}*/ diff --git a/src/mesa/main/context.c b/src/mesa/main/context.c index 92dcdfd4ff..544a3036c6 100644 --- a/src/mesa/main/context.c +++ b/src/mesa/main/context.c @@ -959,14 +959,18 @@ _mesa_init_constants( GLcontext *ctx ) assert(MAX_TEXTURE_LEVELS >= MAX_3D_TEXTURE_LEVELS); assert(MAX_TEXTURE_LEVELS >= MAX_CUBE_TEXTURE_LEVELS); + assert(MAX_TEXTURE_UNITS >= MAX_TEXTURE_COORD_UNITS); + assert(MAX_TEXTURE_UNITS >= MAX_TEXTURE_IMAGE_UNITS); + /* Constants, may be overriden (usually only reduced) by device drivers */ ctx->Const.MaxTextureLevels = MAX_TEXTURE_LEVELS; ctx->Const.Max3DTextureLevels = MAX_3D_TEXTURE_LEVELS; ctx->Const.MaxCubeTextureLevels = MAX_CUBE_TEXTURE_LEVELS; ctx->Const.MaxTextureRectSize = MAX_TEXTURE_RECT_SIZE; - ctx->Const.MaxTextureUnits = MAX_TEXTURE_UNITS; ctx->Const.MaxTextureCoordUnits = MAX_TEXTURE_COORD_UNITS; ctx->Const.MaxTextureImageUnits = MAX_TEXTURE_IMAGE_UNITS; + ctx->Const.MaxTextureUnits = MIN2(ctx->Const.MaxTextureCoordUnits, + ctx->Const.MaxTextureImageUnits); ctx->Const.MaxTextureMaxAnisotropy = MAX_TEXTURE_MAX_ANISOTROPY; ctx->Const.MaxTextureLodBias = MAX_TEXTURE_LOD_BIAS; ctx->Const.MaxArrayLockSize = MAX_ARRAY_LOCK_SIZE; @@ -1041,7 +1045,8 @@ _mesa_init_constants( GLcontext *ctx ) #endif /* sanity checks */ - ASSERT(ctx->Const.MaxTextureUnits == MAX2(ctx->Const.MaxTextureImageUnits, ctx->Const.MaxTextureCoordUnits)); + ASSERT(ctx->Const.MaxTextureUnits == MIN2(ctx->Const.MaxTextureImageUnits, + ctx->Const.MaxTextureCoordUnits)); ASSERT(ctx->Const.FragmentProgram.MaxLocalParams <= MAX_PROGRAM_LOCAL_PARAMS); ASSERT(ctx->Const.VertexProgram.MaxLocalParams <= MAX_PROGRAM_LOCAL_PARAMS); } diff --git a/src/mesa/main/get.c b/src/mesa/main/get.c index 7147c9a5cc..9b322908d1 100644 --- a/src/mesa/main/get.c +++ b/src/mesa/main/get.c @@ -1040,7 +1040,7 @@ _mesa_GetBooleanv( GLenum pname, GLboolean *params ) break; case GL_MAX_TEXTURE_UNITS_ARB: CHECK_EXT1(ARB_multitexture, "GetBooleanv"); - params[0] = INT_TO_BOOLEAN(MIN2(ctx->Const.MaxTextureImageUnits, ctx->Const.MaxTextureCoordUnits)); + params[0] = INT_TO_BOOLEAN(ctx->Const.MaxTextureUnits); break; case GL_ACTIVE_TEXTURE_ARB: CHECK_EXT1(ARB_multitexture, "GetBooleanv"); @@ -2858,7 +2858,7 @@ _mesa_GetFloatv( GLenum pname, GLfloat *params ) break; case GL_MAX_TEXTURE_UNITS_ARB: CHECK_EXT1(ARB_multitexture, "GetFloatv"); - params[0] = (GLfloat)(MIN2(ctx->Const.MaxTextureImageUnits, ctx->Const.MaxTextureCoordUnits)); + params[0] = (GLfloat)(ctx->Const.MaxTextureUnits); break; case GL_ACTIVE_TEXTURE_ARB: CHECK_EXT1(ARB_multitexture, "GetFloatv"); @@ -4676,7 +4676,7 @@ _mesa_GetIntegerv( GLenum pname, GLint *params ) break; case GL_MAX_TEXTURE_UNITS_ARB: CHECK_EXT1(ARB_multitexture, "GetIntegerv"); - params[0] = MIN2(ctx->Const.MaxTextureImageUnits, ctx->Const.MaxTextureCoordUnits); + params[0] = ctx->Const.MaxTextureUnits; break; case GL_ACTIVE_TEXTURE_ARB: CHECK_EXT1(ARB_multitexture, "GetIntegerv"); diff --git a/src/mesa/main/get_gen.py b/src/mesa/main/get_gen.py index 5b3d35fc44..9dd6b8f79e 100644 --- a/src/mesa/main/get_gen.py +++ b/src/mesa/main/get_gen.py @@ -495,8 +495,7 @@ StateVars = [ # GL_ARB_multitexture ( "GL_MAX_TEXTURE_UNITS_ARB", GLint, - ["MIN2(ctx->Const.MaxTextureImageUnits, ctx->Const.MaxTextureCoordUnits)"], - "", ["ARB_multitexture"] ), + ["ctx->Const.MaxTextureUnits"], "", ["ARB_multitexture"] ), ( "GL_ACTIVE_TEXTURE_ARB", GLint, [ "GL_TEXTURE0_ARB + ctx->Texture.CurrentUnit"], "", ["ARB_multitexture"] ), ( "GL_CLIENT_ACTIVE_TEXTURE_ARB", GLint, diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h index c443411b62..c8831386bb 100644 --- a/src/mesa/main/mtypes.h +++ b/src/mesa/main/mtypes.h @@ -2302,7 +2302,7 @@ struct gl_constants GLint MaxTextureRectSize; /* GL_NV_texture_rectangle */ GLuint MaxTextureCoordUnits; GLuint MaxTextureImageUnits; - GLuint MaxTextureUnits; /* = MAX(CoordUnits, ImageUnits) */ + GLuint MaxTextureUnits; /* = MIN(CoordUnits, ImageUnits) */ GLfloat MaxTextureMaxAnisotropy; /* GL_EXT_texture_filter_anisotropic */ GLfloat MaxTextureLodBias; /* GL_EXT_texture_lod_bias */ GLuint MaxArrayLockSize; -- cgit v1.2.3