diff options
author | Merov Linden <merov@lindenlab.com> | 2012-06-08 17:29:56 -0700 |
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committer | Merov Linden <merov@lindenlab.com> | 2012-06-08 17:29:56 -0700 |
commit | ac6f0304c51b6b8c8e4414ff1bc254be78f0845d (patch) | |
tree | 0b211c8c84ff92e6cdbeeb8d0197314e4821a60c /indra/llrender/llshadermgr.cpp | |
parent | 1aba6c119ef05a4cfd91325c8455dc8c60098746 (diff) | |
parent | cdb57cb299097b203581a6ef99840350831c321c (diff) |
Merge pull from richard/viewer-chui
Diffstat (limited to 'indra/llrender/llshadermgr.cpp')
-rw-r--r-- | indra/llrender/llshadermgr.cpp | 120 |
1 files changed, 64 insertions, 56 deletions
diff --git a/indra/llrender/llshadermgr.cpp b/indra/llrender/llshadermgr.cpp index 908443e8cf..7d384450e6 100644 --- a/indra/llrender/llshadermgr.cpp +++ b/indra/llrender/llshadermgr.cpp @@ -575,34 +575,46 @@ GLhandleARB LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shade GLcharARB* text[4096]; GLuint count = 0; - F32 version = gGLManager.mGLVersion; - -//hack to never use GLSL > 1.20 on OSX -#if LL_DARWIN - version = llmin(version, 2.9f); -#endif - - if (version < 2.1f) - { - text[count++] = strdup("#version 110\n"); - text[count++] = strdup("#define ATTRIBUTE attribute\n"); - text[count++] = strdup("#define VARYING varying\n"); - } - else if (version < 3.3f) + S32 major_version = gGLManager.mGLSLVersionMajor; + S32 minor_version = gGLManager.mGLSLVersionMinor; + + if (major_version == 1 && minor_version < 30) { - //set version to 1.20 - text[count++] = strdup("#version 120\n"); - text[count++] = strdup("#define FXAA_GLSL_120 1\n"); - text[count++] = strdup("#define FXAA_FAST_PIXEL_OFFSET 0\n"); - text[count++] = strdup("#define ATTRIBUTE attribute\n"); - text[count++] = strdup("#define VARYING varying\n"); + if (minor_version < 10) + { + //should NEVER get here -- if major version is 1 and minor version is less than 10, + // viewer should never attempt to use shaders, continuing will result in undefined behavior + llerrs << "Unsupported GLSL Version." << llendl; + } + + if (minor_version <= 19) + { + text[count++] = strdup("#version 110\n"); + text[count++] = strdup("#define ATTRIBUTE attribute\n"); + text[count++] = strdup("#define VARYING varying\n"); + text[count++] = strdup("#define VARYING_FLAT varying\n"); + } + else if (minor_version <= 29) + { + //set version to 1.20 + text[count++] = strdup("#version 120\n"); + text[count++] = strdup("#define FXAA_GLSL_120 1\n"); + text[count++] = strdup("#define FXAA_FAST_PIXEL_OFFSET 0\n"); + text[count++] = strdup("#define ATTRIBUTE attribute\n"); + text[count++] = strdup("#define VARYING varying\n"); + text[count++] = strdup("#define VARYING_FLAT varying\n"); + } } else { - if (version < 4.f) + if (major_version < 4) { //set version to 1.30 text[count++] = strdup("#version 130\n"); + + //some implementations of GLSL 1.30 require integer precision be explicitly declared + text[count++] = strdup("precision mediump int;\n"); + text[count++] = strdup("precision highp float;\n"); } else { //set version to 400 @@ -618,16 +630,25 @@ GLhandleARB LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shade { //"varying" state is "out" in a vertex program, "in" in a fragment program // ("varying" is deprecated after version 1.20) text[count++] = strdup("#define VARYING out\n"); + text[count++] = strdup("#define VARYING_FLAT flat out\n"); } else { text[count++] = strdup("#define VARYING in\n"); + text[count++] = strdup("#define VARYING_FLAT flat in\n"); } //backwards compatibility with legacy texture lookup syntax + text[count++] = strdup("#define texture2D texture\n"); text[count++] = strdup("#define textureCube texture\n"); text[count++] = strdup("#define texture2DLod textureLod\n"); text[count++] = strdup("#define shadow2D(a,b) vec2(texture(a,b))\n"); + + if (major_version > 1 || minor_version >= 40) + { //GLSL 1.40 replaces texture2DRect et al with texture + text[count++] = strdup("#define texture2DRect texture\n"); + text[count++] = strdup("#define shadow2DRect(a,b) vec2(texture(a,b))\n"); + } } //copy preprocessor definitions into buffer @@ -651,22 +672,24 @@ GLhandleARB LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shade . uniform sampler2D texN; - VARYING float vary_texture_index; + VARYING_FLAT ivec4 vary_texture_index; + + vec4 ret = vec4(1,0,1,1); vec4 diffuseLookup(vec2 texcoord) { - switch (int(vary_texture_index+0.25)) + switch (vary_texture_index.r)) { - case 0: return texture2D(tex0, texcoord); - case 1: return texture2D(tex1, texcoord); - case 2: return texture2D(tex2, texcoord); + case 0: ret = texture2D(tex0, texcoord); break; + case 1: ret = texture2D(tex1, texcoord); break; + case 2: ret = texture2D(tex2, texcoord); break; . . . - case N: return texture2D(texN, texcoord); + case N: return texture2D(texN, texcoord); break; } - return vec4(0,0,0,0); + return ret; } */ @@ -679,7 +702,7 @@ GLhandleARB LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shade if (texture_index_channels > 1) { - text[count++] = strdup("VARYING float vary_texture_index;\n"); + text[count++] = strdup("VARYING_FLAT ivec4 vary_texture_index;\n"); } text[count++] = strdup("vec4 diffuseLookup(vec2 texcoord)\n"); @@ -691,45 +714,28 @@ GLhandleARB LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shade text[count++] = strdup("return texture2D(tex0, texcoord);\n"); text[count++] = strdup("}\n"); } - else if (gGLManager.mGLVersion >= 3.f) - { - text[count++] = strdup("\tswitch (int(vary_texture_index+0.25))\n"); + else if (major_version > 1 || minor_version >= 30) + { //switches are supported in GLSL 1.30 and later + text[count++] = strdup("\tvec4 ret = vec4(1,0,1,1);\n"); + text[count++] = strdup("\tswitch (vary_texture_index.r)\n"); text[count++] = strdup("\t{\n"); //switch body for (S32 i = 0; i < texture_index_channels; ++i) { - std::string case_str = llformat("\t\tcase %d: return texture2D(tex%d, texcoord);\n", i, i); + std::string case_str = llformat("\t\tcase %d: ret = texture2D(tex%d, texcoord); break;\n", i, i); text[count++] = strdup(case_str.c_str()); } text[count++] = strdup("\t}\n"); - text[count++] = strdup("\treturn vec4(1,0,1,1);\n"); + text[count++] = strdup("\treturn ret;\n"); text[count++] = strdup("}\n"); } else - { - //switches aren't supported, make block that looks like: - /* - int ti = int(vary_texture_index+0.25); - if (ti == 0) return texture2D(tex0, texcoord); - if (ti == 1) return texture2D(tex1, texcoord); - . - . - . - if (ti == N) return texture2D(texN, texcoord); - */ - - text[count++] = strdup("int ti = int(vary_texture_index+0.25);\n"); - for (S32 i = 0; i < texture_index_channels; ++i) - { - std::string if_str = llformat("if (ti == %d) return texture2D(tex%d, texcoord);\n", i, i); - text[count++] = strdup(if_str.c_str()); - } - - text[count++] = strdup("\treturn vec4(1,0,1,1);\n"); - text[count++] = strdup("}\n"); - } + { //should never get here. Indexed texture rendering requires GLSL 1.30 or later + // (for passing integers between vertex and fragment shaders) + llerrs << "Indexed texture rendering requires GLSL 1.30 or later." << llendl; + } } //copy file into memory @@ -1070,6 +1076,8 @@ void LLShaderMgr::initAttribsAndUniforms() mReservedUniforms.push_back("magnification"); mReservedUniforms.push_back("max_cof"); mReservedUniforms.push_back("res_scale"); + mReservedUniforms.push_back("dof_width"); + mReservedUniforms.push_back("dof_height"); mReservedUniforms.push_back("depthMap"); mReservedUniforms.push_back("shadowMap0"); |