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-rw-r--r--indra/llrender/llshadermgr.cpp39
-rw-r--r--indra/llrender/llvertexbuffer.cpp6
2 files changed, 29 insertions, 16 deletions
diff --git a/indra/llrender/llshadermgr.cpp b/indra/llrender/llshadermgr.cpp
index d3b2d9fa74..a9248d4d73 100644
--- a/indra/llrender/llshadermgr.cpp
+++ b/indra/llrender/llshadermgr.cpp
@@ -702,7 +702,7 @@ GLhandleARB LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shade
if (texture_index_channels > 1)
{
- text[count++] = strdup("VARYING_FLAT ivec4 vary_texture_index;\n");
+ text[count++] = strdup("VARYING_FLAT int vary_texture_index;\n");
}
text[count++] = strdup("vec4 diffuseLookup(vec2 texcoord)\n");
@@ -716,20 +716,33 @@ GLhandleARB LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shade
}
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: ret = texture2D(tex%d, texcoord); break;\n", i, i);
- text[count++] = strdup(case_str.c_str());
+ if (gGLManager.mIsNVIDIA)
+ { //switches are unreliable on some NVIDIA drivers
+ for (U32 i = 0; i < texture_index_channels; ++i)
+ {
+ std::string if_string = llformat("\t%sif (vary_texture_index == %d) { return texture2D(tex%d, texcoord); }\n", i > 0 ? "else " : "", i, i);
+ text[count++] = strdup(if_string.c_str());
+ }
+ text[count++] = strdup("\treturn vec4(1,0,1,1);\n");
+ text[count++] = strdup("}\n");
}
+ else
+ {
+ text[count++] = strdup("\tvec4 ret = vec4(1,0,1,1);\n");
+ text[count++] = strdup("\tswitch (vary_texture_index)\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);
+ text[count++] = strdup(case_str.c_str());
+ }
- text[count++] = strdup("\t}\n");
- text[count++] = strdup("\treturn ret;\n");
- text[count++] = strdup("}\n");
+ text[count++] = strdup("\t}\n");
+ text[count++] = strdup("\treturn ret;\n");
+ text[count++] = strdup("}\n");
+ }
}
else
{ //should never get here. Indexed texture rendering requires GLSL 1.30 or later
diff --git a/indra/llrender/llvertexbuffer.cpp b/indra/llrender/llvertexbuffer.cpp
index 739b31204d..eadef93c89 100644
--- a/indra/llrender/llvertexbuffer.cpp
+++ b/indra/llrender/llvertexbuffer.cpp
@@ -1327,7 +1327,7 @@ void LLVertexBuffer::setupVertexArray()
1, //TYPE_WEIGHT,
4, //TYPE_WEIGHT4,
4, //TYPE_CLOTHWEIGHT,
- 4, //TYPE_TEXTURE_INDEX
+ 1, //TYPE_TEXTURE_INDEX
};
U32 attrib_type[] =
@@ -1344,7 +1344,7 @@ void LLVertexBuffer::setupVertexArray()
GL_FLOAT, //TYPE_WEIGHT,
GL_FLOAT, //TYPE_WEIGHT4,
GL_FLOAT, //TYPE_CLOTHWEIGHT,
- GL_UNSIGNED_BYTE, //TYPE_TEXTURE_INDEX
+ GL_UNSIGNED_INT, //TYPE_TEXTURE_INDEX
};
bool attrib_integer[] =
@@ -2401,7 +2401,7 @@ void LLVertexBuffer::setupVertexBuffer(U32 data_mask)
#if !LL_DARWIN
S32 loc = TYPE_TEXTURE_INDEX;
void *ptr = (void*) (base + mOffsets[TYPE_VERTEX] + 12);
- glVertexAttribIPointer(loc, 4, GL_UNSIGNED_BYTE, LLVertexBuffer::sTypeSize[TYPE_VERTEX], ptr);
+ glVertexAttribIPointer(loc, 1, GL_UNSIGNED_INT, LLVertexBuffer::sTypeSize[TYPE_VERTEX], ptr);
#endif
}
if (data_mask & MAP_VERTEX)