/* * Mesa 3-D graphics library * Version: 7.5 * * 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. */ /** * \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" #include "shader/prog_instruction.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=0x%x)", wrap ); return GL_FALSE; } /** * Get current texture object for given target. * Return NULL if any error. */ static struct gl_texture_object * get_texobj(GLcontext *ctx, GLenum target) { struct gl_texture_unit *texUnit; if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureImageUnits) { _mesa_error(ctx, GL_INVALID_OPERATION, "glTexParameter(current unit)"); return NULL; } texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; switch (target) { case GL_TEXTURE_1D: return texUnit->CurrentTex[TEXTURE_1D_INDEX]; case GL_TEXTURE_2D: return texUnit->CurrentTex[TEXTURE_2D_INDEX]; case GL_TEXTURE_3D: return texUnit->CurrentTex[TEXTURE_3D_INDEX]; case GL_TEXTURE_CUBE_MAP: if (ctx->Extensions.ARB_texture_cube_map) { return texUnit->CurrentTex[TEXTURE_CUBE_INDEX]; } break; case GL_TEXTURE_RECTANGLE_NV: if (ctx->Extensions.NV_texture_rectangle) { return texUnit->CurrentTex[TEXTURE_RECT_INDEX]; } break; case GL_TEXTURE_1D_ARRAY_EXT: if (ctx->Extensions.MESA_texture_array) { return texUnit->CurrentTex[TEXTURE_1D_ARRAY_INDEX]; } break; case GL_TEXTURE_2D_ARRAY_EXT: if (ctx->Extensions.MESA_texture_array) { return texUnit->CurrentTex[TEXTURE_2D_ARRAY_INDEX]; } break; default: ; } _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(target)"); return NULL; } /** * Convert GL_RED/GREEN/BLUE/ALPHA/ZERO/ONE to SWIZZLE_X/Y/Z/W/ZERO/ONE. * \return -1 if error. */ static GLint comp_to_swizzle(GLenum comp) { switch (comp) { case GL_RED: return SWIZZLE_X; case GL_GREEN: return SWIZZLE_Y; case GL_BLUE: return SWIZZLE_Z; case GL_ALPHA: return SWIZZLE_W; case GL_ZERO: return SWIZZLE_ZERO; case GL_ONE: return SWIZZLE_ONE; default: return -1; } } static void set_swizzle_component(GLuint *swizzle, GLuint comp, GLuint swz) { ASSERT(comp < 4); ASSERT(swz <= SWIZZLE_NIL); { GLuint mask = 0x7 << (3 * comp); GLuint s = (*swizzle & ~mask) | (swz << (3 * comp)); *swizzle = s; } } /** * This is called just prior to changing any texture object state. * Any pending rendering will be flushed out, we'll set the _NEW_TEXTURE * state flag and then mark the texture object as 'incomplete' so that any * per-texture derived state gets recomputed. */ static INLINE void flush(GLcontext *ctx, struct gl_texture_object *texObj) { FLUSH_VERTICES(ctx, _NEW_TEXTURE); texObj->_Complete = GL_FALSE; } /** * Set an integer-valued texture parameter * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise */ static GLboolean set_tex_parameteri(GLcontext *ctx, struct gl_texture_object *texObj, GLenum pname, const GLint *params) { switch (pname) { case GL_TEXTURE_MIN_FILTER: if (texObj->MinFilter == params[0]) return GL_FALSE; switch (params[0]) { case GL_NEAREST: case GL_LINEAR: flush(ctx, texObj); texObj->MinFilter = params[0]; return GL_TRUE; case GL_NEAREST_MIPMAP_NEAREST: case GL_LINEAR_MIPMAP_NEAREST: case GL_NEAREST_MIPMAP_LINEAR: case GL_LINEAR_MIPMAP_LINEAR: if (texObj->Target != GL_TEXTURE_RECTANGLE_NV) { flush(ctx, texObj); texObj->MinFilter = params[0]; return GL_TRUE; } /* fall-through */ default: _mesa_error( ctx, GL_INVALID_VALUE, "glTexParameter(param=0x%x)", params[0] ); } return GL_FALSE; case GL_TEXTURE_MAG_FILTER: if (texObj->MagFilter == params[0]) return GL_FALSE; switch (params[0]) { case GL_NEAREST: case GL_LINEAR: flush(ctx, texObj); texObj->MagFilter = params[0]; return GL_TRUE; default: _mesa_error( ctx, GL_INVALID_VALUE, "glTexParameter(param=0x%x)", params[0]); } return GL_FALSE; case GL_TEXTURE_WRAP_S: if (texObj->WrapS == params[0]) return GL_FALSE; if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) { flush(ctx, texObj); texObj->WrapS = params[0]; return GL_TRUE; } return GL_FALSE; case GL_TEXTURE_WRAP_T: if (texObj->WrapT == params[0]) return GL_FALSE; if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) { flush(ctx, texObj); texObj->WrapT = params[0]; return GL_TRUE; } return GL_FALSE; case GL_TEXTURE_WRAP_R: if (texObj->WrapR == params[0]) return GL_FALSE; if (validate_texture_wrap_mode(ctx, texObj->Target, params[0])) { flush(ctx, texObj); texObj->WrapR = params[0]; return GL_TRUE; } return GL_FALSE; case GL_TEXTURE_BASE_LEVEL: if (texObj->BaseLevel == params[0]) return GL_FALSE; if (params[0] < 0 || (texObj->Target == GL_TEXTURE_RECTANGLE_ARB && params[0] != 0)) { _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param=%d)", params[0]); return GL_FALSE; } flush(ctx, texObj); texObj->BaseLevel = params[0]; return GL_TRUE; case GL_TEXTURE_MAX_LEVEL: if (texObj->MaxLevel == params[0]) return GL_FALSE; if (params[0] < 0 || texObj->Target == GL_TEXTURE_RECTANGLE_ARB) { _mesa_error(ctx, GL_INVALID_OPERATION, "glTexParameter(param=%d)", params[0]); return GL_FALSE; } flush(ctx, texObj); texObj->MaxLevel = params[0]; return GL_TRUE; case GL_GENERATE_MIPMAP_SGIS: if (ctx->Extensions.SGIS_generate_mipmap) { if (texObj->GenerateMipmap != params[0]) { flush(ctx, texObj); texObj->GenerateMipmap = params[0] ? GL_TRUE : GL_FALSE; return GL_TRUE; } return GL_FALSE; } else { _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=GL_GENERATE_MIPMAP_SGIS)"); } return GL_FALSE; case GL_TEXTURE_COMPARE_MODE_ARB: if (ctx->Extensions.ARB_shadow && (params[0] == GL_NONE || params[0] == GL_COMPARE_R_TO_TEXTURE_ARB)) { if (texObj->CompareMode != params[0]) { flush(ctx, texObj); texObj->CompareMode = params[0]; return GL_TRUE; } return GL_FALSE; } else { _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(GL_TEXTURE_COMPARE_MODE_ARB)"); } return GL_FALSE; case GL_TEXTURE_COMPARE_FUNC_ARB: if (ctx->Extensions.ARB_shadow) { if (texObj->CompareFunc == params[0]) return GL_FALSE; switch (params[0]) { case GL_LEQUAL: case GL_GEQUAL: flush(ctx, texObj); texObj->CompareFunc = params[0]; return GL_TRUE; case GL_EQUAL: case GL_NOTEQUAL: case GL_LESS: case GL_GREATER: case GL_ALWAYS: case GL_NEVER: if (ctx->Extensions.EXT_shadow_funcs) { flush(ctx, texObj); texObj->CompareFunc = params[0]; return GL_TRUE; } /* fall-through */ default: _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(GL_TEXTURE_COMPARE_FUNC_ARB)"); } } else { _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname); } return GL_FALSE; case GL_DEPTH_TEXTURE_MODE_ARB: if (ctx->Extensions.ARB_depth_texture && (params[0] == GL_LUMINANCE || params[0] == GL_INTENSITY || params[0] == GL_ALPHA)) { if (texObj->DepthMode != params[0]) { flush(ctx, texObj); texObj->DepthMode = params[0]; return GL_TRUE; } } else { _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(GL_DEPTH_TEXTURE_MODE_ARB)"); } return GL_FALSE; #ifdef FEATURE_OES_draw_texture case GL_TEXTURE_CROP_RECT_OES: texObj->CropRect[0] = params[0]; texObj->CropRect[1] = params[1]; texObj->CropRect[2] = params[2]; texObj->CropRect[3] = params[3]; return GL_TRUE; #endif case GL_TEXTURE_SWIZZLE_R_EXT: case GL_TEXTURE_SWIZZLE_G_EXT: case GL_TEXTURE_SWIZZLE_B_EXT: case GL_TEXTURE_SWIZZLE_A_EXT: if (ctx->Extensions.EXT_texture_swizzle) { const GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT; const GLint swz = comp_to_swizzle(params[0]); if (swz < 0) { _mesa_error(ctx, GL_INVALID_OPERATION, "glTexParameter(swizzle 0x%x)", params[0]); return GL_FALSE; } ASSERT(comp < 4); if (swz >= 0) { flush(ctx, texObj); texObj->Swizzle[comp] = params[0]; set_swizzle_component(&texObj->_Swizzle, comp, swz); return GL_TRUE; } } _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname); return GL_FALSE; case GL_TEXTURE_SWIZZLE_RGBA_EXT: if (ctx->Extensions.EXT_texture_swizzle) { GLuint comp; flush(ctx, texObj); for (comp = 0; comp < 4; comp++) { const GLint swz = comp_to_swizzle(params[comp]); if (swz >= 0) { texObj->Swizzle[comp] = params[comp]; set_swizzle_component(&texObj->_Swizzle, comp, swz); } else { _mesa_error(ctx, GL_INVALID_OPERATION, "glTexParameter(swizzle 0x%x)", params[comp]); return GL_FALSE; } } return GL_TRUE; } _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname); return GL_FALSE; default: _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname); } return GL_FALSE; } /** * Set a float-valued texture parameter * \return GL_TRUE if legal AND the value changed, GL_FALSE otherwise */ static GLboolean set_tex_parameterf(GLcontext *ctx, struct gl_texture_object *texObj, GLenum pname, const GLfloat *params) { switch (pname) { case GL_TEXTURE_MIN_LOD: if (texObj->MinLod == params[0]) return GL_FALSE; flush(ctx, texObj); texObj->MinLod = params[0]; return GL_TRUE; case GL_TEXTURE_MAX_LOD: if (texObj->MaxLod == params[0]) return GL_FALSE; flush(ctx, texObj); texObj->MaxLod = params[0]; return GL_TRUE; case GL_TEXTURE_PRIORITY: flush(ctx, texObj); texObj->Priority = CLAMP(params[0], 0.0F, 1.0F); return GL_TRUE; case GL_TEXTURE_MAX_ANISOTROPY_EXT: if (ctx->Extensions.EXT_texture_filter_anisotropic) { if (texObj->MaxAnisotropy == params[0]) return GL_FALSE; if (params[0] < 1.0) { _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" ); return GL_FALSE; } flush(ctx, texObj); /* clamp to max, that's what NVIDIA does */ texObj->MaxAnisotropy = MIN2(params[0], ctx->Const.MaxTextureMaxAnisotropy); return GL_TRUE; } else { _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=GL_TEXTURE_MAX_ANISOTROPY_EXT)"); } return GL_FALSE; case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB: if (ctx->Extensions.ARB_shadow_ambient) { if (texObj->CompareFailValue != params[0]) { flush(ctx, texObj); texObj->CompareFailValue = CLAMP(params[0], 0.0F, 1.0F); return GL_TRUE; } } else { _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=GL_TEXTURE_COMPARE_FAIL_VALUE_ARB)"); } return GL_FALSE; 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(ctx, texObj); texObj->LodBias = params[0]; return GL_TRUE; } return GL_FALSE; } break; case GL_TEXTURE_BORDER_COLOR: flush(ctx, texObj); texObj->BorderColor[RCOMP] = params[0]; texObj->BorderColor[GCOMP] = params[1]; texObj->BorderColor[BCOMP] = params[2]; texObj->BorderColor[ACOMP] = params[3]; return GL_TRUE; default: _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname); } return GL_FALSE; } void GLAPIENTRY _mesa_TexParameterf(GLenum target, GLenum pname, GLfloat param) { GLboolean need_update; struct gl_texture_object *texObj; GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END(ctx); texObj = get_texobj(ctx, target); if (!texObj) return; switch (pname) { case GL_TEXTURE_MIN_FILTER: case GL_TEXTURE_MAG_FILTER: case GL_TEXTURE_WRAP_S: case GL_TEXTURE_WRAP_T: case GL_TEXTURE_WRAP_R: case GL_TEXTURE_BASE_LEVEL: case GL_TEXTURE_MAX_LEVEL: case GL_GENERATE_MIPMAP_SGIS: case GL_TEXTURE_COMPARE_MODE_ARB: case GL_TEXTURE_COMPARE_FUNC_ARB: case GL_DEPTH_TEXTURE_MODE_ARB: { /* convert float param to int */ GLint p = (GLint) param; need_update = set_tex_parameteri(ctx, texObj, pname, &p); } break; default: /* this will generate an error if pname is illegal */ need_update = set_tex_parameterf(ctx, texObj, pname, ¶m); } if (ctx->Driver.TexParameter && need_update) { ctx->Driver.TexParameter(ctx, target, texObj, pname, ¶m); } } void GLAPIENTRY _mesa_TexParameterfv(GLenum target, GLenum pname, const GLfloat *params) { GLboolean need_update; struct gl_texture_object *texObj; GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END(ctx); texObj = get_texobj(ctx, target); if (!texObj) return; switch (pname) { case GL_TEXTURE_MIN_FILTER: case GL_TEXTURE_MAG_FILTER: case GL_TEXTURE_WRAP_S: case GL_TEXTURE_WRAP_T: case GL_TEXTURE_WRAP_R: case GL_TEXTURE_BASE_LEVEL: case GL_TEXTURE_MAX_LEVEL: case GL_GENERATE_MIPMAP_SGIS: case GL_TEXTURE_COMPARE_MODE_ARB: case GL_TEXTURE_COMPARE_FUNC_ARB: case GL_DEPTH_TEXTURE_MODE_ARB: { /* convert float param to int */ GLint p = (GLint) params[0]; need_update = set_tex_parameteri(ctx, texObj, pname, &p); } break; #ifdef FEATURE_OES_draw_texture case GL_TEXTURE_CROP_RECT_OES: { /* convert float params to int */ GLint iparams[4]; iparams[0] = (GLint) params[0]; iparams[1] = (GLint) params[1]; iparams[2] = (GLint) params[2]; iparams[3] = (GLint) params[3]; need_update = set_tex_parameteri(ctx, target, iparams); } break; #endif default: /* this will generate an error if pname is illegal */ need_update = set_tex_parameterf(ctx, texObj, pname, params); } if (ctx->Driver.TexParameter && need_update) { ctx->Driver.TexParameter(ctx, target, texObj, pname, params); } } void GLAPIENTRY _mesa_TexParameteri(GLenum target, GLenum pname, GLint param) { GLboolean need_update; struct gl_texture_object *texObj; GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END(ctx); texObj = get_texobj(ctx, target); if (!texObj) return; switch (pname) { case GL_TEXTURE_MIN_LOD: case GL_TEXTURE_MAX_LOD: case GL_TEXTURE_PRIORITY: case GL_TEXTURE_MAX_ANISOTROPY_EXT: case GL_TEXTURE_LOD_BIAS: case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB: { GLfloat fparam = (GLfloat) param; /* convert int param to float */ need_update = set_tex_parameterf(ctx, texObj, pname, &fparam); } break; default: /* this will generate an error if pname is illegal */ need_update = set_tex_parameteri(ctx, texObj, pname, ¶m); } if (ctx->Driver.TexParameter && need_update) { GLfloat fparam = (GLfloat) param; ctx->Driver.TexParameter(ctx, target, texObj, pname, &fparam); } } void GLAPIENTRY _mesa_TexParameteriv(GLenum target, GLenum pname, const GLint *params) { GLboolean need_update; struct gl_texture_object *texObj; GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END(ctx); texObj = get_texobj(ctx, target); if (!texObj) return; switch (pname) { case GL_TEXTURE_BORDER_COLOR: { /* convert int params to float */ GLfloat fparams[4]; fparams[0] = INT_TO_FLOAT(params[0]); fparams[1] = INT_TO_FLOAT(params[1]); fparams[2] = INT_TO_FLOAT(params[2]); fparams[3] = INT_TO_FLOAT(params[3]); need_update = set_tex_parameterf(ctx, texObj, pname, fparams); } break; case GL_TEXTURE_MIN_LOD: case GL_TEXTURE_MAX_LOD: case GL_TEXTURE_PRIORITY: case GL_TEXTURE_MAX_ANISOTROPY_EXT: case GL_TEXTURE_LOD_BIAS: case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB: { /* convert int param to float */ GLfloat fparam = (GLfloat) params[0]; need_update = set_tex_parameterf(ctx, texObj, pname, &fparam); } break; default: /* this will generate an error if pname is illegal */ need_update = set_tex_parameteri(ctx, texObj, pname, params); } if (ctx->Driver.TexParameter && need_update) { GLfloat fparams[4]; fparams[0] = INT_TO_FLOAT(params[0]); if (pname == GL_TEXTURE_BORDER_COLOR || pname == GL_TEXTURE_CROP_RECT_OES) { fparams[1] = INT_TO_FLOAT(params[1]); fparams[2] = INT_TO_FLOAT(params[2]); fparams[3] = INT_TO_FLOAT(params[3]); } ctx->Driver.TexParameter(ctx, target, texObj, pname, fparams); } } 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.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 (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)"); } break; case GL_TEXTURE_COMPRESSED: *params = (GLint) img->IsCompressed; 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 = GL_TRUE; break; case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB: if (ctx->Extensions.ARB_shadow_ambient) { *params = obj->CompareFailValue; } else error = GL_TRUE; break; case GL_GENERATE_MIPMAP_SGIS: if (ctx->Extensions.SGIS_generate_mipmap) { *params = (GLfloat) obj->GenerateMipmap; } else error = GL_TRUE; break; case GL_TEXTURE_COMPARE_MODE_ARB: if (ctx->Extensions.ARB_shadow) { *params = (GLfloat) obj->CompareMode; } else error = GL_TRUE; break; case GL_TEXTURE_COMPARE_FUNC_ARB: if (ctx->Extensions.ARB_shadow) { *params = (GLfloat) obj->CompareFunc; } else error = GL_TRUE; break; case GL_DEPTH_TEXTURE_MODE_ARB: if (ctx->Extensions.ARB_depth_texture) { *params = (GLfloat) obj->DepthMode; } else error = GL_TRUE; break; case GL_TEXTURE_LOD_BIAS: if (ctx->Extensions.EXT_texture_lod_bias) { *params = obj->LodBias; } else error = GL_TRUE; break; #ifdef FEATURE_OES_draw_texture case GL_TEXTURE_CROP_RECT_OES: params[0] = obj->CropRect[0]; params[1] = obj->CropRect[1]; params[2] = obj->CropRect[2]; params[3] = obj->CropRect[3]; break; #endif case GL_TEXTURE_SWIZZLE_R_EXT: case GL_TEXTURE_SWIZZLE_G_EXT: case GL_TEXTURE_SWIZZLE_B_EXT: case GL_TEXTURE_SWIZZLE_A_EXT: if (ctx->Extensions.EXT_texture_swizzle) { GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT; *params = (GLfloat) obj->Swizzle[comp]; } else { error = GL_TRUE; } break; case GL_TEXTURE_SWIZZLE_RGBA_EXT: if (ctx->Extensions.EXT_texture_swizzle) { GLuint comp; for (comp = 0; comp < 4; comp++) { params[comp] = (GLfloat) obj->Swizzle[comp]; } } else { error = GL_TRUE; } break; default: error = GL_TRUE; 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; 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, "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; break;; case GL_TEXTURE_MIN_FILTER: *params = (GLint) obj->MinFilter; break;; case GL_TEXTURE_WRAP_S: *params = (GLint) obj->WrapS; break;; case GL_TEXTURE_WRAP_T: *params = (GLint) obj->WrapT; break;; case GL_TEXTURE_WRAP_R: *params = (GLint) obj->WrapR; break;; 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]); } break;; case GL_TEXTURE_RESIDENT: { GLboolean resident; if (ctx->Driver.IsTextureResident) resident = ctx->Driver.IsTextureResident(ctx, obj); else resident = GL_TRUE; *params = (GLint) resident; } break;; case GL_TEXTURE_PRIORITY: *params = FLOAT_TO_INT(obj->Priority); break;; case GL_TEXTURE_MIN_LOD: *params = (GLint) obj->MinLod; break;; case GL_TEXTURE_MAX_LOD: *params = (GLint) obj->MaxLod; break;; case GL_TEXTURE_BASE_LEVEL: *params = obj->BaseLevel; break;; case GL_TEXTURE_MAX_LEVEL: *params = obj->MaxLevel; break;; case GL_TEXTURE_MAX_ANISOTROPY_EXT: if (ctx->Extensions.EXT_texture_filter_anisotropic) { *params = (GLint) obj->MaxAnisotropy; } else { error = GL_TRUE; } break; case GL_TEXTURE_COMPARE_FAIL_VALUE_ARB: if (ctx->Extensions.ARB_shadow_ambient) { *params = (GLint) FLOAT_TO_INT(obj->CompareFailValue); } else { error = GL_TRUE; } break; case GL_GENERATE_MIPMAP_SGIS: if (ctx->Extensions.SGIS_generate_mipmap) { *params = (GLint) obj->GenerateMipmap; } else { error = GL_TRUE; } break; case GL_TEXTURE_COMPARE_MODE_ARB: if (ctx->Extensions.ARB_shadow) { *params = (GLint) obj->CompareMode; } else { error = GL_TRUE; } break; case GL_TEXTURE_COMPARE_FUNC_ARB: if (ctx->Extensions.ARB_shadow) { *params = (GLint) obj->CompareFunc; } else { error = GL_TRUE; } break; case GL_DEPTH_TEXTURE_MODE_ARB: if (ctx->Extensions.ARB_depth_texture) { *params = (GLint) obj->DepthMode; } else { error = GL_TRUE; } break; case GL_TEXTURE_LOD_BIAS: if (ctx->Extensions.EXT_texture_lod_bias) { *params = (GLint) obj->LodBias; } else { error = GL_TRUE; } break; #ifdef FEATURE_OES_draw_texture case GL_TEXTURE_CROP_RECT_OES: params[0] = obj->CropRect[0]; params[1] = obj->CropRect[1]; params[2] = obj->CropRect[2]; params[3] = obj->CropRect[3]; break; #endif case GL_TEXTURE_SWIZZLE_R_EXT: case GL_TEXTURE_SWIZZLE_G_EXT: case GL_TEXTURE_SWIZZLE_B_EXT: case GL_TEXTURE_SWIZZLE_A_EXT: if (ctx->Extensions.EXT_texture_swizzle) { GLuint comp = pname - GL_TEXTURE_SWIZZLE_R_EXT; *params = obj->Swizzle[comp]; } else { error = GL_TRUE; } break; case GL_TEXTURE_SWIZZLE_RGBA_EXT: if (ctx->Extensions.EXT_texture_swizzle) { COPY_4V(params, obj->Swizzle); } else { error = GL_TRUE; } break; default: ; /* silence warnings */ } if (error) _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(pname=0x%x)", pname); _mesa_unlock_texture(ctx, obj); }