diff options
author | Brian Paul <[email protected]> | 2009-01-28 10:27:33 -0700 |
---|---|---|
committer | Brian Paul <[email protected]> | 2009-01-28 10:27:33 -0700 |
commit | 4a89e51c5f88b57040b361b62e80a57c8248ba4b (patch) | |
tree | 266e23beb244c0c0301457b545b7dab71a592522 /src/mesa/main/texparam.c | |
parent | be1a76f88f4c3482e61e0a048a0b28b6b628f223 (diff) |
mesa: set/get new state for GL_EXT_texture_swizzle
Diffstat (limited to 'src/mesa/main/texparam.c')
-rw-r--r-- | src/mesa/main/texparam.c | 219 |
1 files changed, 185 insertions, 34 deletions
diff --git a/src/mesa/main/texparam.c b/src/mesa/main/texparam.c index 2322d849757..695bff00970 100644 --- a/src/mesa/main/texparam.c +++ b/src/mesa/main/texparam.c @@ -38,6 +38,7 @@ #include "main/texcompress.h" #include "main/texparam.h" #include "main/teximage.h" +#include "shader/prog_instruction.h" /** @@ -125,6 +126,45 @@ get_texobj(GLcontext *ctx, GLenum target) } +/** + * 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; + } +} + + /** Set an integer-valued texture parameter */ static void set_tex_parameteri(GLcontext *ctx, @@ -318,9 +358,48 @@ set_tex_parameteri(GLcontext *ctx, texObj->CropRect[1] = params[1]; texObj->CropRect[2] = params[2]; texObj->CropRect[3] = params[3]; - break; + return; #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]); + ASSERT(comp < 4); + if (swz >= 0) { + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texObj->Swizzle[comp] = params[0]; + set_swizzle_component(&texObj->_Swizzle, comp, swz); + return; + } + } + _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname); + return; + + case GL_TEXTURE_SWIZZLE_RGBA_EXT: + if (ctx->Extensions.EXT_texture_swizzle) { + GLuint comp; + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + 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_ENUM, "glTexParameter(param=0x%x)", + params[comp]); + return; + } + } + return; + } + _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname); + return; + default: _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(pname=0x%x)", pname); } @@ -974,63 +1053,63 @@ _mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params ) *params = obj->MaxAnisotropy; } else - error = 1; + error = GL_TRUE; break; case GL_TEXTURE_COMPARE_SGIX: if (ctx->Extensions.SGIX_shadow) { *params = (GLfloat) obj->CompareFlag; } else - error = 1; + error = GL_TRUE; break; case GL_TEXTURE_COMPARE_OPERATOR_SGIX: if (ctx->Extensions.SGIX_shadow) { *params = (GLfloat) obj->CompareOperator; } else - error = 1; + error = GL_TRUE; 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; + error = GL_TRUE; break; case GL_GENERATE_MIPMAP_SGIS: if (ctx->Extensions.SGIS_generate_mipmap) { *params = (GLfloat) obj->GenerateMipmap; } else - error = 1; + error = GL_TRUE; break; case GL_TEXTURE_COMPARE_MODE_ARB: if (ctx->Extensions.ARB_shadow) { *params = (GLfloat) obj->CompareMode; } else - error = 1; + error = GL_TRUE; break; case GL_TEXTURE_COMPARE_FUNC_ARB: if (ctx->Extensions.ARB_shadow) { *params = (GLfloat) obj->CompareFunc; } else - error = 1; + error = GL_TRUE; break; case GL_DEPTH_TEXTURE_MODE_ARB: if (ctx->Extensions.ARB_depth_texture) { *params = (GLfloat) obj->DepthMode; } else - error = 1; + error = GL_TRUE; break; case GL_TEXTURE_LOD_BIAS: if (ctx->Extensions.EXT_texture_lod_bias) { *params = obj->LodBias; } else - error = 1; + error = GL_TRUE; break; #ifdef FEATURE_OES_draw_texture case GL_TEXTURE_CROP_RECT_OES: @@ -1040,10 +1119,37 @@ _mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params ) 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 = 1; + error = GL_TRUE; break; } + if (error) _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameterfv(pname=0x%x)", pname); @@ -1057,6 +1163,7 @@ _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); @@ -1077,19 +1184,19 @@ _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params ) switch (pname) { case GL_TEXTURE_MAG_FILTER: *params = (GLint) obj->MagFilter; - return; + break;; case GL_TEXTURE_MIN_FILTER: *params = (GLint) obj->MinFilter; - return; + break;; case GL_TEXTURE_WRAP_S: *params = (GLint) obj->WrapS; - return; + break;; case GL_TEXTURE_WRAP_T: *params = (GLint) obj->WrapT; - return; + break;; case GL_TEXTURE_WRAP_R: *params = (GLint) obj->WrapR; - return; + break;; case GL_TEXTURE_BORDER_COLOR: { GLfloat b[4]; @@ -1102,7 +1209,7 @@ _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params ) params[2] = FLOAT_TO_INT(b[2]); params[3] = FLOAT_TO_INT(b[3]); } - return; + break;; case GL_TEXTURE_RESIDENT: { GLboolean resident; @@ -1112,74 +1219,92 @@ _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params ) resident = GL_TRUE; *params = (GLint) resident; } - return; + break;; case GL_TEXTURE_PRIORITY: *params = FLOAT_TO_INT(obj->Priority); - return; + break;; case GL_TEXTURE_MIN_LOD: *params = (GLint) obj->MinLod; - return; + break;; case GL_TEXTURE_MAX_LOD: *params = (GLint) obj->MaxLod; - return; + break;; case GL_TEXTURE_BASE_LEVEL: *params = obj->BaseLevel; - return; + break;; case GL_TEXTURE_MAX_LEVEL: *params = obj->MaxLevel; - return; + break;; case GL_TEXTURE_MAX_ANISOTROPY_EXT: if (ctx->Extensions.EXT_texture_filter_anisotropic) { *params = (GLint) obj->MaxAnisotropy; - return; + } + else { + error = GL_TRUE; } break; case GL_TEXTURE_COMPARE_SGIX: if (ctx->Extensions.SGIX_shadow) { *params = (GLint) obj->CompareFlag; - return; + } + else { + error = GL_TRUE; } break; case GL_TEXTURE_COMPARE_OPERATOR_SGIX: if (ctx->Extensions.SGIX_shadow) { *params = (GLint) obj->CompareOperator; - return; + } + else { + error = GL_TRUE; } 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; + } + else { + error = GL_TRUE; } break; case GL_GENERATE_MIPMAP_SGIS: if (ctx->Extensions.SGIS_generate_mipmap) { *params = (GLint) obj->GenerateMipmap; - return; + } + else { + error = GL_TRUE; } break; case GL_TEXTURE_COMPARE_MODE_ARB: if (ctx->Extensions.ARB_shadow) { *params = (GLint) obj->CompareMode; - return; + } + else { + error = GL_TRUE; } break; case GL_TEXTURE_COMPARE_FUNC_ARB: if (ctx->Extensions.ARB_shadow) { *params = (GLint) obj->CompareFunc; - return; + } + else { + error = GL_TRUE; } break; case GL_DEPTH_TEXTURE_MODE_ARB: if (ctx->Extensions.ARB_depth_texture) { *params = (GLint) obj->DepthMode; - return; + } + else { + error = GL_TRUE; } break; case GL_TEXTURE_LOD_BIAS: if (ctx->Extensions.EXT_texture_lod_bias) { *params = (GLint) obj->LodBias; - return; + } + else { + error = GL_TRUE; } break; #ifdef FEATURE_OES_draw_texture @@ -1190,9 +1315,35 @@ _mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params ) 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 we get here, pname was an unrecognized enum */ - _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(pname=0x%x)", pname); + + if (error) + _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(pname=0x%x)", + pname); + + _mesa_unlock_texture(ctx, obj); } |