diff options
Diffstat (limited to 'src/mesa/main/texparam.c')
| -rw-r--r-- | src/mesa/main/texparam.c | 1035 |
1 files changed, 1035 insertions, 0 deletions
diff --git a/src/mesa/main/texparam.c b/src/mesa/main/texparam.c new file mode 100644 index 00000000000..af288c4e18c --- /dev/null +++ b/src/mesa/main/texparam.c @@ -0,0 +1,1035 @@ +/* + * Mesa 3-D graphics library + * Version: 7.1 + * + * Copyright (C) 1999-2008 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"), + * 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 texparam.c + * + * glTexParameter-related functions + */ + + +#include "main/glheader.h" +#include "main/context.h" +#include "main/enums.h" +#include "main/colormac.h" +#include "main/macros.h" +#include "main/texcompress.h" +#include "main/texparam.h" +#include "main/teximage.h" + + +/** + * Check if a coordinate wrap mode is supported for the texture target. + * \return GL_TRUE if legal, GL_FALSE otherwise + */ +static GLboolean +validate_texture_wrap_mode(GLcontext * ctx, GLenum target, GLenum wrap) +{ + const struct gl_extensions * const e = & ctx->Extensions; + + if (wrap == GL_CLAMP || wrap == GL_CLAMP_TO_EDGE || + (wrap == GL_CLAMP_TO_BORDER && e->ARB_texture_border_clamp)) { + /* any texture target */ + return GL_TRUE; + } + else if (target != GL_TEXTURE_RECTANGLE_NV && + (wrap == GL_REPEAT || + (wrap == GL_MIRRORED_REPEAT && + e->ARB_texture_mirrored_repeat) || + (wrap == GL_MIRROR_CLAMP_EXT && + (e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp)) || + (wrap == GL_MIRROR_CLAMP_TO_EDGE_EXT && + (e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp)) || + (wrap == GL_MIRROR_CLAMP_TO_BORDER_EXT && + (e->EXT_texture_mirror_clamp)))) { + /* non-rectangle texture */ + return GL_TRUE; + } + + _mesa_error( ctx, GL_INVALID_VALUE, "glTexParameter(param)" ); + return GL_FALSE; +} + + +void GLAPIENTRY +_mesa_TexParameterf( GLenum target, GLenum pname, GLfloat param ) +{ + _mesa_TexParameterfv(target, pname, ¶m); +} + + +void GLAPIENTRY +_mesa_TexParameterfv( GLenum target, GLenum pname, const GLfloat *params ) +{ + const GLenum eparam = (GLenum) (GLint) params[0]; + struct gl_texture_unit *texUnit; + struct gl_texture_object *texObj; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE)) + _mesa_debug(ctx, "glTexParameter %s %s %.1f(%s)...\n", + _mesa_lookup_enum_by_nr(target), + _mesa_lookup_enum_by_nr(pname), + *params, + _mesa_lookup_enum_by_nr(eparam)); + + if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureImageUnits) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glTexParameterfv(current unit)"); + return; + } + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + + switch (target) { + case GL_TEXTURE_1D: + texObj = texUnit->Current1D; + break; + case GL_TEXTURE_2D: + texObj = texUnit->Current2D; + break; + case GL_TEXTURE_3D: + texObj = texUnit->Current3D; + break; + case GL_TEXTURE_CUBE_MAP: + if (!ctx->Extensions.ARB_texture_cube_map) { + _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(target)" ); + return; + } + texObj = texUnit->CurrentCubeMap; + break; + case GL_TEXTURE_RECTANGLE_NV: + if (!ctx->Extensions.NV_texture_rectangle) { + _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(target)" ); + return; + } + texObj = texUnit->CurrentRect; + break; + case GL_TEXTURE_1D_ARRAY_EXT: + if (!ctx->Extensions.MESA_texture_array) { + _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(target)" ); + return; + } + texObj = texUnit->Current1DArray; + break; + case GL_TEXTURE_2D_ARRAY_EXT: + if (!ctx->Extensions.MESA_texture_array) { + _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(target)" ); + return; + } + texObj = texUnit->Current2DArray; + break; + default: + _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(target)" ); + return; + } + + switch (pname) { + case GL_TEXTURE_MIN_FILTER: + /* A small optimization */ + if (texObj->MinFilter == eparam) + return; + if (eparam==GL_NEAREST || eparam==GL_LINEAR) { + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->MinFilter = eparam; + } + else if ((eparam==GL_NEAREST_MIPMAP_NEAREST || + eparam==GL_LINEAR_MIPMAP_NEAREST || + eparam==GL_NEAREST_MIPMAP_LINEAR || + eparam==GL_LINEAR_MIPMAP_LINEAR) && + texObj->Target != GL_TEXTURE_RECTANGLE_NV) { + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->MinFilter = eparam; + } + else { + _mesa_error( ctx, GL_INVALID_VALUE, "glTexParameter(param)" ); + return; + } + break; + case GL_TEXTURE_MAG_FILTER: + /* A small optimization */ + if (texObj->MagFilter == eparam) + return; + + if (eparam==GL_NEAREST || eparam==GL_LINEAR) { + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->MagFilter = eparam; + } + else { + _mesa_error( ctx, GL_INVALID_VALUE, "glTexParameter(param)" ); + return; + } + break; + case GL_TEXTURE_WRAP_S: + if (texObj->WrapS == eparam) + return; + if (validate_texture_wrap_mode(ctx, texObj->Target, eparam)) { + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->WrapS = eparam; + } + else { + return; + } + break; + case GL_TEXTURE_WRAP_T: + if (texObj->WrapT == eparam) + return; + if (validate_texture_wrap_mode(ctx, texObj->Target, eparam)) { + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->WrapT = eparam; + } + else { + return; + } + break; + case GL_TEXTURE_WRAP_R: + if (texObj->WrapR == eparam) + return; + if (validate_texture_wrap_mode(ctx, texObj->Target, eparam)) { + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->WrapR = eparam; + } + else { + return; + } + break; + case GL_TEXTURE_BORDER_COLOR: + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->BorderColor[RCOMP] = params[0]; + texObj->BorderColor[GCOMP] = params[1]; + texObj->BorderColor[BCOMP] = params[2]; + texObj->BorderColor[ACOMP] = params[3]; + UNCLAMPED_FLOAT_TO_CHAN(texObj->_BorderChan[RCOMP], params[0]); + UNCLAMPED_FLOAT_TO_CHAN(texObj->_BorderChan[GCOMP], params[1]); + UNCLAMPED_FLOAT_TO_CHAN(texObj->_BorderChan[BCOMP], params[2]); + UNCLAMPED_FLOAT_TO_CHAN(texObj->_BorderChan[ACOMP], params[3]); + break; + case GL_TEXTURE_MIN_LOD: + if (texObj->MinLod == params[0]) + return; + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->MinLod = params[0]; + break; + case GL_TEXTURE_MAX_LOD: + if (texObj->MaxLod == params[0]) + return; + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->MaxLod = params[0]; + break; + case GL_TEXTURE_BASE_LEVEL: + if (params[0] < 0.0) { + _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)"); + return; + } + if (target == GL_TEXTURE_RECTANGLE_ARB && params[0] != 0.0) { + _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)"); + return; + } + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->BaseLevel = (GLint) params[0]; + break; + case GL_TEXTURE_MAX_LEVEL: + if (params[0] < 0.0) { + _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)"); + return; + } + if (target == GL_TEXTURE_RECTANGLE_ARB) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glTexParameter(param)"); + return; + } + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->MaxLevel = (GLint) params[0]; + break; + case GL_TEXTURE_PRIORITY: + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->Priority = CLAMP( params[0], 0.0F, 1.0F ); + break; + case GL_TEXTURE_MAX_ANISOTROPY_EXT: + if (ctx->Extensions.EXT_texture_filter_anisotropic) { + if (params[0] < 1.0) { + _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" ); + return; + } + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + /* clamp to max, that's what NVIDIA does */ + texObj->MaxAnisotropy = MIN2(params[0], + ctx->Const.MaxTextureMaxAnisotropy); + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glTexParameter(pname=GL_TEXTURE_MAX_ANISOTROPY_EXT)"); + return; + } + break; + case GL_TEXTURE_COMPARE_SGIX: + if (ctx->Extensions.SGIX_shadow) { + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->CompareFlag = params[0] ? GL_TRUE : GL_FALSE; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glTexParameter(pname=GL_TEXTURE_COMPARE_SGIX)"); + return; + } + break; + case GL_TEXTURE_COMPARE_OPERATOR_SGIX: + if (ctx->Extensions.SGIX_shadow) { + GLenum op = (GLenum) params[0]; + if (op == GL_TEXTURE_LEQUAL_R_SGIX || + op == GL_TEXTURE_GEQUAL_R_SGIX) { + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->CompareOperator = op; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(param)"); + } + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glTexParameter(pname=GL_TEXTURE_COMPARE_OPERATOR_SGIX)"); + return; + } + break; + case GL_SHADOW_AMBIENT_SGIX: /* aka GL_TEXTURE_COMPARE_FAIL_VALUE_ARB */ + if (ctx->Extensions.SGIX_shadow_ambient) { + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->ShadowAmbient = CLAMP(params[0], 0.0F, 1.0F); + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glTexParameter(pname=GL_SHADOW_AMBIENT_SGIX)"); + return; + } + break; + case GL_GENERATE_MIPMAP_SGIS: + if (ctx->Extensions.SGIS_generate_mipmap) { + texObj->GenerateMipmap = params[0] ? GL_TRUE : GL_FALSE; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glTexParameter(pname=GL_GENERATE_MIPMAP_SGIS)"); + return; + } + break; + case GL_TEXTURE_COMPARE_MODE_ARB: + if (ctx->Extensions.ARB_shadow) { + const GLenum mode = (GLenum) params[0]; + if (mode == GL_NONE || mode == GL_COMPARE_R_TO_TEXTURE_ARB) { + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->CompareMode = mode; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glTexParameter(bad GL_TEXTURE_COMPARE_MODE_ARB: 0x%x)", mode); + return; + } + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glTexParameter(pname=GL_TEXTURE_COMPARE_MODE_ARB)"); + return; + } + break; + case GL_TEXTURE_COMPARE_FUNC_ARB: + if (ctx->Extensions.ARB_shadow) { + const GLenum func = (GLenum) params[0]; + if (func == GL_LEQUAL || func == GL_GEQUAL) { + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->CompareFunc = func; + } + else if (ctx->Extensions.EXT_shadow_funcs && + (func == GL_EQUAL || + func == GL_NOTEQUAL || + func == GL_LESS || + func == GL_GREATER || + func == GL_ALWAYS || + func == GL_NEVER)) { + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->CompareFunc = func; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glTexParameter(bad GL_TEXTURE_COMPARE_FUNC_ARB)"); + return; + } + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glTexParameter(pname=GL_TEXTURE_COMPARE_FUNC_ARB)"); + return; + } + break; + case GL_DEPTH_TEXTURE_MODE_ARB: + if (ctx->Extensions.ARB_depth_texture) { + const GLenum result = (GLenum) params[0]; + if (result == GL_LUMINANCE || result == GL_INTENSITY + || result == GL_ALPHA) { + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->DepthMode = result; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glTexParameter(bad GL_DEPTH_TEXTURE_MODE_ARB)"); + return; + } + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glTexParameter(pname=GL_DEPTH_TEXTURE_MODE_ARB)"); + return; + } + break; + case GL_TEXTURE_LOD_BIAS: + /* NOTE: this is really part of OpenGL 1.4, not EXT_texture_lod_bias*/ + if (ctx->Extensions.EXT_texture_lod_bias) { + if (texObj->LodBias != params[0]) { + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->LodBias = params[0]; + } + } + break; + + default: + _mesa_error(ctx, GL_INVALID_ENUM, + "glTexParameter(pname=0x%x)", pname); + return; + } + + texObj->_Complete = GL_FALSE; + + if (ctx->Driver.TexParameter) { + (*ctx->Driver.TexParameter)( ctx, target, texObj, pname, params ); + } +} + + +void GLAPIENTRY +_mesa_TexParameteri( GLenum target, GLenum pname, GLint param ) +{ + GLfloat fparam[4]; + if (pname == GL_TEXTURE_PRIORITY) + fparam[0] = INT_TO_FLOAT(param); + else + fparam[0] = (GLfloat) param; + fparam[1] = fparam[2] = fparam[3] = 0.0; + _mesa_TexParameterfv(target, pname, fparam); +} + + +void GLAPIENTRY +_mesa_TexParameteriv( GLenum target, GLenum pname, const GLint *params ) +{ + GLfloat fparam[4]; + if (pname == GL_TEXTURE_BORDER_COLOR) { + fparam[0] = INT_TO_FLOAT(params[0]); + fparam[1] = INT_TO_FLOAT(params[1]); + fparam[2] = INT_TO_FLOAT(params[2]); + fparam[3] = INT_TO_FLOAT(params[3]); + } + else { + if (pname == GL_TEXTURE_PRIORITY) + fparam[0] = INT_TO_FLOAT(params[0]); + else + fparam[0] = (GLfloat) params[0]; + fparam[1] = fparam[2] = fparam[3] = 0.0F; + } + _mesa_TexParameterfv(target, pname, fparam); +} + + +void GLAPIENTRY +_mesa_GetTexLevelParameterfv( GLenum target, GLint level, + GLenum pname, GLfloat *params ) +{ + GLint iparam; + _mesa_GetTexLevelParameteriv( target, level, pname, &iparam ); + *params = (GLfloat) iparam; +} + + +static GLuint +tex_image_dimensions(GLcontext *ctx, GLenum target) +{ + switch (target) { + case GL_TEXTURE_1D: + case GL_PROXY_TEXTURE_1D: + return 1; + case GL_TEXTURE_2D: + case GL_PROXY_TEXTURE_2D: + return 2; + case GL_TEXTURE_3D: + case GL_PROXY_TEXTURE_3D: + return 3; + case GL_TEXTURE_CUBE_MAP: + 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 ? 2 : 0; + case GL_TEXTURE_RECTANGLE_NV: + case GL_PROXY_TEXTURE_RECTANGLE_NV: + return ctx->Extensions.NV_texture_rectangle ? 2 : 0; + case GL_TEXTURE_1D_ARRAY_EXT: + case GL_PROXY_TEXTURE_1D_ARRAY_EXT: + return ctx->Extensions.MESA_texture_array ? 2 : 0; + case GL_TEXTURE_2D_ARRAY_EXT: + case GL_PROXY_TEXTURE_2D_ARRAY_EXT: + return ctx->Extensions.MESA_texture_array ? 3 : 0; + default: + _mesa_problem(ctx, "bad target in _mesa_tex_target_dimensions()"); + return 0; + } +} + + +void GLAPIENTRY +_mesa_GetTexLevelParameteriv( GLenum target, GLint level, + GLenum pname, GLint *params ) +{ + const struct gl_texture_unit *texUnit; + struct gl_texture_object *texObj; + const struct gl_texture_image *img = NULL; + GLuint dimensions; + GLboolean isProxy; + GLint maxLevels; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureImageUnits) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetTexLevelParameteriv(current unit)"); + return; + } + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + + /* this will catch bad target values */ + dimensions = tex_image_dimensions(ctx, target); /* 1, 2 or 3 */ + if (dimensions == 0) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexLevelParameter[if]v(target)"); + return; + } + + maxLevels = _mesa_max_texture_levels(ctx, target); + if (maxLevels == 0) { + /* should not happen since <target> was just checked above */ + _mesa_problem(ctx, "maxLevels=0 in _mesa_GetTexLevelParameter"); + return; + } + + if (level < 0 || level >= maxLevels) { + _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexLevelParameter[if]v" ); + return; + } + + texObj = _mesa_select_tex_object(ctx, texUnit, target); + _mesa_lock_texture(ctx, texObj); + + img = _mesa_select_tex_image(ctx, texObj, target, level); + if (!img || !img->TexFormat) { + /* undefined texture image */ + if (pname == GL_TEXTURE_COMPONENTS) + *params = 1; + else + *params = 0; + goto out; + } + + isProxy = _mesa_is_proxy_texture(target); + + switch (pname) { + case GL_TEXTURE_WIDTH: + *params = img->Width; + break; + case GL_TEXTURE_HEIGHT: + *params = img->Height; + break; + case GL_TEXTURE_DEPTH: + *params = img->Depth; + break; + case GL_TEXTURE_INTERNAL_FORMAT: + *params = img->InternalFormat; + break; + case GL_TEXTURE_BORDER: + *params = img->Border; + break; + case GL_TEXTURE_RED_SIZE: + if (img->_BaseFormat == GL_RGB || img->_BaseFormat == GL_RGBA) + *params = img->TexFormat->RedBits; + else + *params = 0; + break; + case GL_TEXTURE_GREEN_SIZE: + if (img->_BaseFormat == GL_RGB || img->_BaseFormat == GL_RGBA) + *params = img->TexFormat->GreenBits; + else + *params = 0; + break; + case GL_TEXTURE_BLUE_SIZE: + if (img->_BaseFormat == GL_RGB || img->_BaseFormat == GL_RGBA) + *params = img->TexFormat->BlueBits; + else + *params = 0; + break; + case GL_TEXTURE_ALPHA_SIZE: + if (img->_BaseFormat == GL_ALPHA || + img->_BaseFormat == GL_LUMINANCE_ALPHA || + img->_BaseFormat == GL_RGBA) + *params = img->TexFormat->AlphaBits; + else + *params = 0; + break; + case GL_TEXTURE_INTENSITY_SIZE: + if (img->_BaseFormat != GL_INTENSITY) + *params = 0; + else if (img->TexFormat->IntensityBits > 0) + *params = img->TexFormat->IntensityBits; + else /* intensity probably stored as rgb texture */ + *params = MIN2(img->TexFormat->RedBits, img->TexFormat->GreenBits); + break; + case GL_TEXTURE_LUMINANCE_SIZE: + if (img->_BaseFormat != GL_LUMINANCE && + img->_BaseFormat != GL_LUMINANCE_ALPHA) + *params = 0; + else if (img->TexFormat->LuminanceBits > 0) + *params = img->TexFormat->LuminanceBits; + else /* luminance probably stored as rgb texture */ + *params = MIN2(img->TexFormat->RedBits, img->TexFormat->GreenBits); + break; + case GL_TEXTURE_INDEX_SIZE_EXT: + if (img->_BaseFormat == GL_COLOR_INDEX) + *params = img->TexFormat->IndexBits; + else + *params = 0; + break; + case GL_TEXTURE_DEPTH_SIZE_ARB: + if (ctx->Extensions.SGIX_depth_texture || + ctx->Extensions.ARB_depth_texture) + *params = img->TexFormat->DepthBits; + else + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetTexLevelParameter[if]v(pname)"); + break; + case GL_TEXTURE_STENCIL_SIZE_EXT: + if (ctx->Extensions.EXT_packed_depth_stencil) { + *params = img->TexFormat->StencilBits; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetTexLevelParameter[if]v(pname)"); + } + break; + + /* GL_ARB_texture_compression */ + case GL_TEXTURE_COMPRESSED_IMAGE_SIZE: + if (ctx->Extensions.ARB_texture_compression) { + if (img->IsCompressed && !isProxy) { + /* Don't use ctx->Driver.CompressedTextureSize() since that + * may returned a padded hardware size. + */ + *params = _mesa_compressed_texture_size(ctx, img->Width, + img->Height, img->Depth, + img->TexFormat->MesaFormat); + } + else { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetTexLevelParameter[if]v(pname)"); + } + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetTexLevelParameter[if]v(pname)"); + } + break; + case GL_TEXTURE_COMPRESSED: + if (ctx->Extensions.ARB_texture_compression) { + *params = (GLint) img->IsCompressed; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetTexLevelParameter[if]v(pname)"); + } + break; + + /* GL_ARB_texture_float */ + case GL_TEXTURE_RED_TYPE_ARB: + if (ctx->Extensions.ARB_texture_float) { + *params = img->TexFormat->RedBits ? img->TexFormat->DataType : GL_NONE; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetTexLevelParameter[if]v(pname)"); + } + break; + case GL_TEXTURE_GREEN_TYPE_ARB: + if (ctx->Extensions.ARB_texture_float) { + *params = img->TexFormat->GreenBits ? img->TexFormat->DataType : GL_NONE; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetTexLevelParameter[if]v(pname)"); + } + break; + case GL_TEXTURE_BLUE_TYPE_ARB: + if (ctx->Extensions.ARB_texture_float) { + *params = img->TexFormat->BlueBits ? img->TexFormat->DataType : GL_NONE; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetTexLevelParameter[if]v(pname)"); + } + break; + case GL_TEXTURE_ALPHA_TYPE_ARB: + if (ctx->Extensions.ARB_texture_float) { + *params = img->TexFormat->AlphaBits ? img->TexFormat->DataType : GL_NONE; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetTexLevelParameter[if]v(pname)"); + } + break; + case GL_TEXTURE_LUMINANCE_TYPE_ARB: + if (ctx->Extensions.ARB_texture_float) { + *params = img->TexFormat->LuminanceBits ? img->TexFormat->DataType : GL_NONE; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetTexLevelParameter[if]v(pname)"); + } + break; + case GL_TEXTURE_INTENSITY_TYPE_ARB: + if (ctx->Extensions.ARB_texture_float) { + *params = img->TexFormat->IntensityBits ? img->TexFormat->DataType : GL_NONE; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetTexLevelParameter[if]v(pname)"); + } + break; + case GL_TEXTURE_DEPTH_TYPE_ARB: + if (ctx->Extensions.ARB_texture_float) { + *params = img->TexFormat->DepthBits ? img->TexFormat->DataType : GL_NONE; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetTexLevelParameter[if]v(pname)"); + } + break; + + default: + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetTexLevelParameter[if]v(pname)"); + } + + out: + _mesa_unlock_texture(ctx, texObj); +} + + + +void GLAPIENTRY +_mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params ) +{ + struct gl_texture_unit *texUnit; + struct gl_texture_object *obj; + GLboolean error = GL_FALSE; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureImageUnits) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetTexParameterfv(current unit)"); + return; + } + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + + obj = _mesa_select_tex_object(ctx, texUnit, target); + if (!obj) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameterfv(target)"); + return; + } + + _mesa_lock_texture(ctx, obj); + switch (pname) { + case GL_TEXTURE_MAG_FILTER: + *params = ENUM_TO_FLOAT(obj->MagFilter); + break; + case GL_TEXTURE_MIN_FILTER: + *params = ENUM_TO_FLOAT(obj->MinFilter); + break; + case GL_TEXTURE_WRAP_S: + *params = ENUM_TO_FLOAT(obj->WrapS); + break; + case GL_TEXTURE_WRAP_T: + *params = ENUM_TO_FLOAT(obj->WrapT); + break; + case GL_TEXTURE_WRAP_R: + *params = ENUM_TO_FLOAT(obj->WrapR); + break; + case GL_TEXTURE_BORDER_COLOR: + params[0] = CLAMP(obj->BorderColor[0], 0.0F, 1.0F); + params[1] = CLAMP(obj->BorderColor[1], 0.0F, 1.0F); + params[2] = CLAMP(obj->BorderColor[2], 0.0F, 1.0F); + params[3] = CLAMP(obj->BorderColor[3], 0.0F, 1.0F); + break; + case GL_TEXTURE_RESIDENT: + { + GLboolean resident; + if (ctx->Driver.IsTextureResident) + resident = ctx->Driver.IsTextureResident(ctx, obj); + else + resident = GL_TRUE; + *params = ENUM_TO_FLOAT(resident); + } + break; + case GL_TEXTURE_PRIORITY: + *params = obj->Priority; + break; + case GL_TEXTURE_MIN_LOD: + *params = obj->MinLod; + break; + case GL_TEXTURE_MAX_LOD: + *params = obj->MaxLod; + break; + case GL_TEXTURE_BASE_LEVEL: + *params = (GLfloat) obj->BaseLevel; + break; + case GL_TEXTURE_MAX_LEVEL: + *params = (GLfloat) obj->MaxLevel; + break; + case GL_TEXTURE_MAX_ANISOTROPY_EXT: + if (ctx->Extensions.EXT_texture_filter_anisotropic) { + *params = obj->MaxAnisotropy; + } + else + error = 1; + break; + case GL_TEXTURE_COMPARE_SGIX: + if (ctx->Extensions.SGIX_shadow) { + *params = (GLfloat) obj->CompareFlag; + } + else + error = 1; + break; + case GL_TEXTURE_COMPARE_OPERATOR_SGIX: + if (ctx->Extensions.SGIX_shadow) { + *params = (GLfloat) obj->CompareOperator; + } + else + error = 1; + break; + case GL_SHADOW_AMBIENT_SGIX: /* aka GL_TEXTURE_COMPARE_FAIL_VALUE_ARB */ + if (ctx->Extensions.SGIX_shadow_ambient) { + *params = obj->ShadowAmbient; + } + else + error = 1; + break; + case GL_GENERATE_MIPMAP_SGIS: + if (ctx->Extensions.SGIS_generate_mipmap) { + *params = (GLfloat) obj->GenerateMipmap; + } + else + error = 1; + break; + case GL_TEXTURE_COMPARE_MODE_ARB: + if (ctx->Extensions.ARB_shadow) { + *params = (GLfloat) obj->CompareMode; + } + else + error = 1; + break; + case GL_TEXTURE_COMPARE_FUNC_ARB: + if (ctx->Extensions.ARB_shadow) { + *params = (GLfloat) obj->CompareFunc; + } + else + error = 1; + break; + case GL_DEPTH_TEXTURE_MODE_ARB: + if (ctx->Extensions.ARB_depth_texture) { + *params = (GLfloat) obj->DepthMode; + } + else + error = 1; + break; + case GL_TEXTURE_LOD_BIAS: + if (ctx->Extensions.EXT_texture_lod_bias) { + *params = obj->LodBias; + } + else + error = 1; + break; + default: + error = 1; + break; + } + if (error) + _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameterfv(pname=0x%x)", + pname); + + _mesa_unlock_texture(ctx, obj); +} + + +void GLAPIENTRY +_mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params ) +{ + struct gl_texture_unit *texUnit; + struct gl_texture_object *obj; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureImageUnits) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetTexParameteriv(current unit)"); + return; + } + + texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; + + obj = _mesa_select_tex_object(ctx, texUnit, target); + if (!obj) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(target)"); + return; + } + + switch (pname) { + case GL_TEXTURE_MAG_FILTER: + *params = (GLint) obj->MagFilter; + return; + case GL_TEXTURE_MIN_FILTER: + *params = (GLint) obj->MinFilter; + return; + case GL_TEXTURE_WRAP_S: + *params = (GLint) obj->WrapS; + return; + case GL_TEXTURE_WRAP_T: + *params = (GLint) obj->WrapT; + return; + case GL_TEXTURE_WRAP_R: + *params = (GLint) obj->WrapR; + return; + case GL_TEXTURE_BORDER_COLOR: + { + GLfloat b[4]; + b[0] = CLAMP(obj->BorderColor[0], 0.0F, 1.0F); + b[1] = CLAMP(obj->BorderColor[1], 0.0F, 1.0F); + b[2] = CLAMP(obj->BorderColor[2], 0.0F, 1.0F); + b[3] = CLAMP(obj->BorderColor[3], 0.0F, 1.0F); + params[0] = FLOAT_TO_INT(b[0]); + params[1] = FLOAT_TO_INT(b[1]); + params[2] = FLOAT_TO_INT(b[2]); + params[3] = FLOAT_TO_INT(b[3]); + } + return; + case GL_TEXTURE_RESIDENT: + { + GLboolean resident; + if (ctx->Driver.IsTextureResident) + resident = ctx->Driver.IsTextureResident(ctx, obj); + else + resident = GL_TRUE; + *params = (GLint) resident; + } + return; + case GL_TEXTURE_PRIORITY: + *params = FLOAT_TO_INT(obj->Priority); + return; + case GL_TEXTURE_MIN_LOD: + *params = (GLint) obj->MinLod; + return; + case GL_TEXTURE_MAX_LOD: + *params = (GLint) obj->MaxLod; + return; + case GL_TEXTURE_BASE_LEVEL: + *params = obj->BaseLevel; + return; + case GL_TEXTURE_MAX_LEVEL: + *params = obj->MaxLevel; + return; + case GL_TEXTURE_MAX_ANISOTROPY_EXT: + if (ctx->Extensions.EXT_texture_filter_anisotropic) { + *params = (GLint) obj->MaxAnisotropy; + return; + } + break; + case GL_TEXTURE_COMPARE_SGIX: + if (ctx->Extensions.SGIX_shadow) { + *params = (GLint) obj->CompareFlag; + return; + } + break; + case GL_TEXTURE_COMPARE_OPERATOR_SGIX: + if (ctx->Extensions.SGIX_shadow) { + *params = (GLint) obj->CompareOperator; + return; + } + break; + case GL_SHADOW_AMBIENT_SGIX: /* aka GL_TEXTURE_COMPARE_FAIL_VALUE_ARB */ + if (ctx->Extensions.SGIX_shadow_ambient) { + *params = (GLint) FLOAT_TO_INT(obj->ShadowAmbient); + return; + } + break; + case GL_GENERATE_MIPMAP_SGIS: + if (ctx->Extensions.SGIS_generate_mipmap) { + *params = (GLint) obj->GenerateMipmap; + return; + } + break; + case GL_TEXTURE_COMPARE_MODE_ARB: + if (ctx->Extensions.ARB_shadow) { + *params = (GLint) obj->CompareMode; + return; + } + break; + case GL_TEXTURE_COMPARE_FUNC_ARB: + if (ctx->Extensions.ARB_shadow) { + *params = (GLint) obj->CompareFunc; + return; + } + break; + case GL_DEPTH_TEXTURE_MODE_ARB: + if (ctx->Extensions.ARB_depth_texture) { + *params = (GLint) obj->DepthMode; + return; + } + break; + case GL_TEXTURE_LOD_BIAS: + if (ctx->Extensions.EXT_texture_lod_bias) { + *params = (GLint) obj->LodBias; + return; + } + break; + default: + ; /* silence warnings */ + } + /* If we get here, pname was an unrecognized enum */ + _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(pname=0x%x)", pname); +} |