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-rw-r--r--servers/rendering/rasterizer_rd/shaders/copy.glsl123
1 files changed, 65 insertions, 58 deletions
diff --git a/servers/rendering/rasterizer_rd/shaders/copy.glsl b/servers/rendering/rasterizer_rd/shaders/copy.glsl
index e565bd8e3d..355a2b9d75 100644
--- a/servers/rendering/rasterizer_rd/shaders/copy.glsl
+++ b/servers/rendering/rasterizer_rd/shaders/copy.glsl
@@ -58,12 +58,20 @@ layout(rgba8, set = 3, binding = 0) uniform restrict writeonly image2D dest_buff
layout(rgba32f, set = 3, binding = 0) uniform restrict writeonly image2D dest_buffer;
#endif
+#ifdef MODE_GAUSSIAN_GLOW
+shared vec4 local_cache[256];
+shared vec4 temp_cache[128];
+#endif
+
void main() {
// Pixel being shaded
ivec2 pos = ivec2(gl_GlobalInvocationID.xy);
+
+#ifndef MODE_GAUSSIAN_GLOW // Glow needs the extra threads
if (any(greaterThanEqual(pos, params.section.zw))) { //too large, do nothing
return;
}
+#endif
#ifdef MODE_MIPMAP
@@ -104,70 +112,69 @@ void main() {
#ifdef MODE_GAUSSIAN_GLOW
- //Glow uses larger sigma 1 for a more rounded blur effect
+ // First pass copy texture into 16x16 local memory for every 8x8 thread block
+ vec2 quad_center_uv = clamp(vec2(gl_GlobalInvocationID.xy + gl_LocalInvocationID.xy - 3.5) / params.section.zw, vec2(0.5 / params.section.zw), vec2(1.0 - 1.5 / params.section.zw));
+ uint dest_index = gl_LocalInvocationID.x * 2 + gl_LocalInvocationID.y * 2 * 16;
+
+ if (bool(params.flags & FLAG_HIGH_QUALITY_GLOW)) {
+ vec2 quad_offset_uv = clamp((vec2(gl_GlobalInvocationID.xy + gl_LocalInvocationID.xy - 3.0)) / params.section.zw, vec2(0.5 / params.section.zw), vec2(1.0 - 1.5 / params.section.zw));
-#define GLOW_ADD(m_ofs, m_mult) \
- { \
- ivec2 ofs = base_pos + m_ofs; \
- if (all(greaterThanEqual(ofs, section_begin)) && all(lessThan(ofs, section_end))) { \
- color += texelFetch(source_color, ofs, 0) * m_mult; \
- } \
+ local_cache[dest_index] = (textureLod(source_color, quad_center_uv, 0) + textureLod(source_color, quad_offset_uv, 0)) * 0.5;
+ local_cache[dest_index + 1] = (textureLod(source_color, quad_center_uv + vec2(1.0 / params.section.z, 0.0), 0) + textureLod(source_color, quad_offset_uv + vec2(1.0 / params.section.z, 0.0), 0)) * 0.5;
+ local_cache[dest_index + 16] = (textureLod(source_color, quad_center_uv + vec2(0.0, 1.0 / params.section.w), 0) + textureLod(source_color, quad_offset_uv + vec2(0.0, 1.0 / params.section.w), 0)) * 0.5;
+ local_cache[dest_index + 16 + 1] = (textureLod(source_color, quad_center_uv + vec2(1.0 / params.section.zw), 0) + textureLod(source_color, quad_offset_uv + vec2(1.0 / params.section.zw), 0)) * 0.5;
+ } else {
+ local_cache[dest_index] = textureLod(source_color, quad_center_uv, 0);
+ local_cache[dest_index + 1] = textureLod(source_color, quad_center_uv + vec2(1.0 / params.section.z, 0.0), 0);
+ local_cache[dest_index + 16] = textureLod(source_color, quad_center_uv + vec2(0.0, 1.0 / params.section.w), 0);
+ local_cache[dest_index + 16 + 1] = textureLod(source_color, quad_center_uv + vec2(1.0 / params.section.zw), 0);
}
+ memoryBarrierShared();
+ barrier();
+
+ // Horizontal pass. Needs to copy into 8x16 chunk of local memory so vertical pass has full resolution
+ uint read_index = gl_LocalInvocationID.x + gl_LocalInvocationID.y * 32 + 4;
+ vec4 color_top = vec4(0.0);
+ color_top += local_cache[read_index] * 0.174938;
+ color_top += local_cache[read_index + 1] * 0.165569;
+ color_top += local_cache[read_index + 2] * 0.140367;
+ color_top += local_cache[read_index + 3] * 0.106595;
+ color_top += local_cache[read_index - 1] * 0.165569;
+ color_top += local_cache[read_index - 2] * 0.140367;
+ color_top += local_cache[read_index - 3] * 0.106595;
+
+ vec4 color_bottom = vec4(0.0);
+ color_bottom += local_cache[read_index + 16] * 0.174938;
+ color_bottom += local_cache[read_index + 1 + 16] * 0.165569;
+ color_bottom += local_cache[read_index + 2 + 16] * 0.140367;
+ color_bottom += local_cache[read_index + 3 + 16] * 0.106595;
+ color_bottom += local_cache[read_index - 1 + 16] * 0.165569;
+ color_bottom += local_cache[read_index - 2 + 16] * 0.140367;
+ color_bottom += local_cache[read_index - 3 + 16] * 0.106595;
+
+ // rotate samples to take advantage of cache coherency
+ uint write_index = gl_LocalInvocationID.y * 2 + gl_LocalInvocationID.x * 16;
+
+ temp_cache[write_index] = color_top;
+ temp_cache[write_index + 1] = color_bottom;
+
+ memoryBarrierShared();
+ barrier();
+
+ // Vertical pass
+ uint index = gl_LocalInvocationID.y + gl_LocalInvocationID.x * 16 + 4;
vec4 color = vec4(0.0);
- if (bool(params.flags & FLAG_HORIZONTAL)) {
- ivec2 base_pos = ((pos + params.section.xy) << 1) + ivec2(1);
- ivec2 section_begin = params.section.xy << 1;
- ivec2 section_end = section_begin + (params.section.zw << 1);
-
- if (bool(params.flags & FLAG_HIGH_QUALITY_GLOW)) {
- //Sample from two lines to capture single pixel features
- GLOW_ADD(ivec2(0, 0), 0.152781);
- GLOW_ADD(ivec2(1, 0), 0.144599);
- GLOW_ADD(ivec2(2, 0), 0.122589);
- GLOW_ADD(ivec2(3, 0), 0.093095);
- GLOW_ADD(ivec2(4, 0), 0.063327);
- GLOW_ADD(ivec2(-1, 0), 0.144599);
- GLOW_ADD(ivec2(-2, 0), 0.122589);
- GLOW_ADD(ivec2(-3, 0), 0.093095);
- GLOW_ADD(ivec2(-4, 0), 0.063327);
-
- GLOW_ADD(ivec2(0, 1), 0.152781);
- GLOW_ADD(ivec2(1, 1), 0.144599);
- GLOW_ADD(ivec2(2, 1), 0.122589);
- GLOW_ADD(ivec2(3, 1), 0.093095);
- GLOW_ADD(ivec2(4, 1), 0.063327);
- GLOW_ADD(ivec2(-1, 1), 0.144599);
- GLOW_ADD(ivec2(-2, 1), 0.122589);
- GLOW_ADD(ivec2(-3, 1), 0.093095);
- GLOW_ADD(ivec2(-4, 1), 0.063327);
- color *= 0.5;
- } else {
- GLOW_ADD(ivec2(0, 0), 0.174938);
- GLOW_ADD(ivec2(1, 0), 0.165569);
- GLOW_ADD(ivec2(2, 0), 0.140367);
- GLOW_ADD(ivec2(3, 0), 0.106595);
- GLOW_ADD(ivec2(-1, 0), 0.165569);
- GLOW_ADD(ivec2(-2, 0), 0.140367);
- GLOW_ADD(ivec2(-3, 0), 0.106595);
- }
-
- color *= params.glow_strength;
- } else {
- ivec2 base_pos = pos + params.section.xy;
- ivec2 section_begin = params.section.xy;
- ivec2 section_end = section_begin + params.section.zw;
-
- GLOW_ADD(ivec2(0, 0), 0.288713);
- GLOW_ADD(ivec2(0, 1), 0.233062);
- GLOW_ADD(ivec2(0, 2), 0.122581);
- GLOW_ADD(ivec2(0, -1), 0.233062);
- GLOW_ADD(ivec2(0, -2), 0.122581);
- color *= params.glow_strength;
- }
+ color += temp_cache[index] * 0.174938;
+ color += temp_cache[index + 1] * 0.165569;
+ color += temp_cache[index + 2] * 0.140367;
+ color += temp_cache[index + 3] * 0.106595;
+ color += temp_cache[index - 1] * 0.165569;
+ color += temp_cache[index - 2] * 0.140367;
+ color += temp_cache[index - 3] * 0.106595;
-#undef GLOW_ADD
+ color *= params.glow_strength;
if (bool(params.flags & FLAG_GLOW_FIRST_PASS)) {
#ifdef GLOW_USE_AUTO_EXPOSURE
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 21:36:10 +0000