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Implement EFB copy filter and gamma in hardware backends

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Also makes y_scale a dynamic parameter for EFB copies, as it doesn't
make sense to keep it as part of the uid, otherwise we're generating
redundant shaders.
This commit is contained in:
Stenzek
2018-04-29 18:52:30 +10:00
parent a192a3bb30
commit 9e798eec94
41 changed files with 526 additions and 236 deletions
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30
Source/Core/VideoBackends/OGL/TextureCache.cpp
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@ -68,10 +68,18 @@ constexpr const char* geometry_program = "layout(triangles) in;\n"
void TextureCache::CopyEFB(u8* dst, const EFBCopyParams& params, u32 native_width,
u32 bytes_per_row, u32 num_blocks_y, u32 memory_stride,
const EFBRectangle& src_rect, bool scale_by_half)
const EFBRectangle& src_rect, bool scale_by_half, float y_scale,
float gamma, bool clamp_top, bool clamp_bottom,
const CopyFilterCoefficientArray& filter_coefficients)
{
// Flip top/bottom due to lower-left coordinate system.
float clamp_top_val =
clamp_bottom ? (1.0f - src_rect.bottom / static_cast<float>(EFB_HEIGHT)) : 0.0f;
float clamp_bottom_val =
clamp_top ? (1.0f - src_rect.top / static_cast<float>(EFB_HEIGHT)) : 0.0f;
TextureConverter::EncodeToRamFromTexture(dst, params, native_width, bytes_per_row, num_blocks_y,
memory_stride, src_rect, scale_by_half);
memory_stride, src_rect, scale_by_half, y_scale, gamma,
clamp_top_val, clamp_bottom_val, filter_coefficients);
}
TextureCache::TextureCache()
@ -483,7 +491,9 @@ void TextureCache::DecodeTextureOnGPU(TCacheEntry* entry, u32 dst_level, const u
void TextureCache::CopyEFBToCacheEntry(TCacheEntry* entry, bool is_depth_copy,
const EFBRectangle& src_rect, bool scale_by_half,
EFBCopyFormat dst_format, bool is_intensity)
EFBCopyFormat dst_format, bool is_intensity, float gamma,
bool clamp_top, bool clamp_bottom,
const CopyFilterCoefficientArray& filter_coefficients)
{
auto* destination_texture = static_cast<OGLTexture*>(entry->texture.get());
g_renderer->ResetAPIState(); // reset any game specific settings
@ -528,6 +538,11 @@ void TextureCache::CopyEFBToCacheEntry(TCacheEntry* entry, bool is_depth_copy,
code.GetBuffer(), geo_program);
shader.position_uniform = glGetUniformLocation(shader.shader.glprogid, "copy_position");
shader.pixel_height_uniform = glGetUniformLocation(shader.shader.glprogid, "pixel_height");
shader.gamma_rcp_uniform = glGetUniformLocation(shader.shader.glprogid, "gamma_rcp");
shader.clamp_tb_uniform = glGetUniformLocation(shader.shader.glprogid, "clamp_tb");
shader.filter_coefficients_uniform =
glGetUniformLocation(shader.shader.glprogid, "filter_coefficients");
}
shader.shader.Bind();
@ -535,6 +550,15 @@ void TextureCache::CopyEFBToCacheEntry(TCacheEntry* entry, bool is_depth_copy,
TargetRectangle R = g_renderer->ConvertEFBRectangle(src_rect);
glUniform4f(shader.position_uniform, static_cast<float>(R.left), static_cast<float>(R.top),
static_cast<float>(R.right), static_cast<float>(R.bottom));
glUniform1f(shader.pixel_height_uniform, g_ActiveConfig.bCopyEFBScaled ?
1.0f / g_renderer->GetTargetHeight() :
1.0f / EFB_HEIGHT);
glUniform1f(shader.gamma_rcp_uniform, 1.0f / gamma);
glUniform2f(shader.clamp_tb_uniform,
clamp_bottom ? (1.0f - src_rect.bottom / static_cast<float>(EFB_HEIGHT)) : 0.0f,
clamp_top ? (1.0f - src_rect.top / static_cast<float>(EFB_HEIGHT)) : 0.0f);
glUniform3f(shader.filter_coefficients_uniform, filter_coefficients[0] / 64.0f,
filter_coefficients[1] / 64.0f, filter_coefficients[2] / 64.0f);
ProgramShaderCache::BindVertexFormat(nullptr);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);