griefith/test
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

Object Mode: Outlines: Use textureGather extension if available.

Browse Source 
This has very little impact (only had 12.5% perf improvment on Nvidia for this specific pass).
But it's an improvement nontheless!
This commit is contained in:
Clément Foucault
2018-04-16 22:53:44 +02:00
parent af1c220d89
commit f92e92b1c0
2 changed files with 17 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
source/blender/draw/modes/object_mode.c
View File

@@ -346,7 +346,7 @@ static void OBJECT_engine_init(void *vedata)
datatoc_common_fullscreen_vert_glsl, NULL,
datatoc_object_outline_detect_frag_glsl,
datatoc_common_globals_lib_glsl,
NULL);
"#extension GL_ARB_texture_gather : enable\n");
e_data.outline_fade_sh = DRW_shader_create_fullscreen(datatoc_object_outline_expand_frag_glsl, NULL);

29
source/blender/draw/modes/shaders/object_outline_detect_frag.glsl
View File

@@ -34,25 +34,28 @@ vec4 convert_id_to_color(int id)
}
}
const ivec2 ofs[4] = ivec2[4](
ivec2( 1, 0), ivec2( 0, 1),
ivec2(-1, 0), ivec2( 0, -1)
);
void main()
{
ivec2 texel = ivec2(gl_FragCoord.xy);
vec2 uv = gl_FragCoord.xy / vec2(textureSize(outlineId, 0).xy);
#ifdef GL_ARB_texture_gather
vec2 texel_size = 1.0 / vec2(textureSize(outlineId, 0).xy);
vec2 uv1 = gl_FragCoord.xy * texel_size - texel_size;
vec2 uv2 = gl_FragCoord.xy * texel_size;
/* Samples order is CW starting from top left. */
uvec4 tmp1 = textureGather(outlineId, uv1);
uvec4 tmp2 = textureGather(outlineId, uv2);
uint ref_id = tmp1.y;
uvec4 id = uvec4(tmp1.xz, tmp2.xz);
#else
uvec4 id;
uint ref_id = texelFetch(outlineId, texel, 0).r;
#if 0 /* commented out until being tested */
id = textureGatherOffsets(outlineId, uv, ofs);
#else
id.x = texelFetchOffset(outlineId, texel, 0, ofs[0]).r;
id.y = texelFetchOffset(outlineId, texel, 0, ofs[1]).r;
id.z = texelFetchOffset(outlineId, texel, 0, ofs[2]).r;
id.w = texelFetchOffset(outlineId, texel, 0, ofs[3]).r;
id.x = texelFetchOffset(outlineId, texel, 0, ivec2( 1, 0)).r;
id.y = texelFetchOffset(outlineId, texel, 0, ivec2( 0, 1)).r;
id.z = texelFetchOffset(outlineId, texel, 0, ivec2(-1, 0)).r;
id.w = texelFetchOffset(outlineId, texel, 0, ivec2( 0, -1)).r;
#endif
float ref_depth = texelFetch(outlineDepth, texel, 0).r;