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authorMorph <39850852+Morph1984@users.noreply.github.com>2020-06-20 13:43:04 +0200
committerMorph <39850852+Morph1984@users.noreply.github.com>2020-06-21 05:02:29 +0200
commitf77c897b8d5287adb64e08f65e494dac45033de3 (patch)
treec22641cb2b379535eba887224a6f4c95e796076e
parentgl_device: Check for GL_EXT_texture_shadow_lod (diff)
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-rw-r--r--src/video_core/renderer_opengl/gl_shader_decompiler.cpp50
1 files changed, 43 insertions, 7 deletions
diff --git a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
index d6e30b321..2c49aeaac 100644
--- a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
+++ b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
@@ -37,6 +37,7 @@ using Tegra::Shader::IpaMode;
using Tegra::Shader::IpaSampleMode;
using Tegra::Shader::PixelImap;
using Tegra::Shader::Register;
+using Tegra::Shader::TextureType;
using VideoCommon::Shader::BuildTransformFeedback;
using VideoCommon::Shader::Registry;
@@ -526,6 +527,9 @@ private:
if (device.HasImageLoadFormatted()) {
code.AddLine("#extension GL_EXT_shader_image_load_formatted : require");
}
+ if (device.HasTextureShadowLod()) {
+ code.AddLine("#extension GL_EXT_texture_shadow_lod : require");
+ }
if (device.HasWarpIntrinsics()) {
code.AddLine("#extension GL_NV_gpu_shader5 : require");
code.AddLine("#extension GL_NV_shader_thread_group : require");
@@ -909,13 +913,13 @@ private:
return "samplerBuffer";
}
switch (sampler.type) {
- case Tegra::Shader::TextureType::Texture1D:
+ case TextureType::Texture1D:
return "sampler1D";
- case Tegra::Shader::TextureType::Texture2D:
+ case TextureType::Texture2D:
return "sampler2D";
- case Tegra::Shader::TextureType::Texture3D:
+ case TextureType::Texture3D:
return "sampler3D";
- case Tegra::Shader::TextureType::TextureCube:
+ case TextureType::TextureCube:
return "samplerCube";
default:
UNREACHABLE();
@@ -1380,8 +1384,19 @@ private:
const std::size_t count = operation.GetOperandsCount();
const bool has_array = meta->sampler.is_array;
const bool has_shadow = meta->sampler.is_shadow;
+ const bool workaround_lod_array_shadow_as_grad =
+ !device.HasTextureShadowLod() && function_suffix == "Lod" && meta->sampler.is_shadow &&
+ ((meta->sampler.type == TextureType::Texture2D && meta->sampler.is_array) ||
+ meta->sampler.type == TextureType::TextureCube);
+
+ std::string expr = "texture";
+
+ if (workaround_lod_array_shadow_as_grad) {
+ expr += "Grad";
+ } else {
+ expr += function_suffix;
+ }
- std::string expr = "texture" + function_suffix;
if (!meta->aoffi.empty()) {
expr += "Offset";
} else if (!meta->ptp.empty()) {
@@ -1415,6 +1430,16 @@ private:
expr += ')';
}
+ if (workaround_lod_array_shadow_as_grad) {
+ switch (meta->sampler.type) {
+ case TextureType::Texture2D:
+ return expr + ", vec2(0.0), vec2(0.0))";
+ case TextureType::TextureCube:
+ return expr + ", vec3(0.0), vec3(0.0))";
+ }
+ UNREACHABLE();
+ }
+
for (const auto& variant : extras) {
if (const auto argument = std::get_if<TextureArgument>(&variant)) {
expr += GenerateTextureArgument(*argument);
@@ -2041,8 +2066,19 @@ private:
const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
ASSERT(meta);
- std::string expr = GenerateTexture(
- operation, "Lod", {TextureArgument{Type::Float, meta->lod}, TextureOffset{}});
+ std::string expr{};
+
+ if (!device.HasTextureShadowLod() && meta->sampler.is_shadow &&
+ ((meta->sampler.type == TextureType::Texture2D && meta->sampler.is_array) ||
+ meta->sampler.type == TextureType::TextureCube)) {
+ LOG_ERROR(Render_OpenGL,
+ "Device lacks GL_EXT_texture_shadow_lod, using textureGrad as a workaround");
+ expr = GenerateTexture(operation, "Lod", {});
+ } else {
+ expr = GenerateTexture(operation, "Lod",
+ {TextureArgument{Type::Float, meta->lod}, TextureOffset{}});
+ }
+
if (meta->sampler.is_shadow) {
expr = "vec4(" + expr + ')';
}