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remove precision specifiers from the three-point shader 

gives better compatibility on desktop GL

probably shouldn't be used on GLES anyway
This commit is contained in:
fgsfds 2020-06-11 06:33:43 +03:00
parent d8416c117e
commit 337821119d
1 changed files with 7 additions and 7 deletions
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14
src/pc/gfx/gfx_opengl.c
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@ -310,22 +310,22 @@ static struct ShaderProgram *gfx_opengl_create_and_load_new_shader(uint32_t shad
if (used_textures[0] || used_textures[1]) {
if (configFiltering == 2) {
append_line(fs_buf, &fs_len, "#define TEX_OFFSET(off) texture2D(tex, texCoord - (off)/texSize)");
append_line(fs_buf, &fs_len, "lowp vec4 filter3point(in sampler2D tex, in mediump vec2 texCoord, in mediump vec2 texSize) {");
append_line(fs_buf, &fs_len, " mediump vec2 offset = fract(texCoord*texSize - vec2(0.5));");
append_line(fs_buf, &fs_len, "vec4 filter3point(in sampler2D tex, in vec2 texCoord, in vec2 texSize) {");
append_line(fs_buf, &fs_len, " vec2 offset = fract(texCoord*texSize - vec2(0.5));");
append_line(fs_buf, &fs_len, " offset -= step(1.0, offset.x + offset.y);");
append_line(fs_buf, &fs_len, " lowp vec4 c0 = TEX_OFFSET(offset);");
append_line(fs_buf, &fs_len, " lowp vec4 c1 = TEX_OFFSET(vec2(offset.x - sign(offset.x), offset.y));");
append_line(fs_buf, &fs_len, " lowp vec4 c2 = TEX_OFFSET(vec2(offset.x, offset.y - sign(offset.y)));");
append_line(fs_buf, &fs_len, " vec4 c0 = TEX_OFFSET(offset);");
append_line(fs_buf, &fs_len, " vec4 c1 = TEX_OFFSET(vec2(offset.x - sign(offset.x), offset.y));");
append_line(fs_buf, &fs_len, " vec4 c2 = TEX_OFFSET(vec2(offset.x, offset.y - sign(offset.y)));");
append_line(fs_buf, &fs_len, " return c0 + abs(offset.x)*(c1-c0) + abs(offset.y)*(c2-c0);");
append_line(fs_buf, &fs_len, "}");
append_line(fs_buf, &fs_len, "lowp vec4 sampleTex(in sampler2D tex, in mediump vec2 uv, in mediump vec2 texSize, in bool filter) {");
append_line(fs_buf, &fs_len, "vec4 sampleTex(in sampler2D tex, in vec2 uv, in vec2 texSize, in bool filter) {");
append_line(fs_buf, &fs_len, "if (filter)");
append_line(fs_buf, &fs_len, "return filter3point(tex, uv, texSize);");
append_line(fs_buf, &fs_len, "else");
append_line(fs_buf, &fs_len, "return texture2D(tex, uv);");
append_line(fs_buf, &fs_len, "}");
} else {
append_line(fs_buf, &fs_len, "lowp vec4 sampleTex(in sampler2D tex, in mediump vec2 uv, in mediump vec2 texSize, in bool filter) {");
append_line(fs_buf, &fs_len, "vec4 sampleTex(in sampler2D tex, in vec2 uv, in vec2 texSize, in bool filter) {");
append_line(fs_buf, &fs_len, "return texture2D(tex, uv);");
append_line(fs_buf, &fs_len, "}");
}