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add option to select built-in opengl shaders

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This commit is contained in:
FunkyFr3sh 2023-08-26 21:28:53 +02:00
parent 62bb150c71
commit e9f1023a31
4 changed files with 67 additions and 32 deletions
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17
config/ConfigFormUnit.cpp
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@ -778,14 +778,25 @@ void __fastcall TConfigForm::FormCreate(TObject *Sender)
for (int i = 0; i < list.Length; i++)
ShaderCbx->AddItem(list[i], NULL);
auto shader = ini->ReadString("ddraw", "shader", "");
ShaderCbx->ItemIndex = ShaderCbx->Items->IndexOf(shader);
}
catch (...)
{
}
if (ShaderCbx->Items->Count == 0) {
ShaderCbx->AddItem("Nearest neighbor", NULL);
ShaderCbx->AddItem("Bilinear", NULL);
ShaderCbx->AddItem("Bicubic", NULL);
}
auto shader = ini->ReadString("ddraw", "shader", "Bicubic");
ShaderCbx->ItemIndex = ShaderCbx->Items->IndexOf(shader);
if (ShaderCbx->ItemIndex == -1) {
ShaderCbx->AddItem(shader, NULL);
ShaderCbx->ItemIndex = ShaderCbx->Items->Count - 1;
}
int d3d9_filter = ini->ReadInteger("ddraw", "d3d9_filter", 2);
switch (d3d9_filter) {

36
inc/openglshader.h
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@ -15,25 +15,25 @@ const char PASSTHROUGH_VERT_SHADER_110[] =
const char PALETTE_FRAG_SHADER_110[] =
"#version 110\n"
"uniform sampler2D SurfaceTex; \n"
"uniform sampler2D PaletteTex; \n"
"uniform sampler2D Texture; \n"
"uniform sampler2D PaletteTexture; \n"
"varying vec2 TEX0; \n"
"\n"
"void main()\n"
"{\n"
" vec4 pIndex = texture2D(SurfaceTex, TEX0); \n"
" gl_FragColor = texture2D(PaletteTex, vec2(pIndex.r * (255.0/256.0) + (0.5/256.0), 0)); \n"
" vec4 pIndex = texture2D(Texture, TEX0); \n"
" gl_FragColor = texture2D(PaletteTexture, vec2(pIndex.r * (255.0/256.0) + (0.5/256.0), 0)); \n"
"}\n";
const char PASSTHROUGH_FRAG_SHADER_110[] =
"#version 110\n"
"uniform sampler2D SurfaceTex; \n"
"uniform sampler2D Texture; \n"
"varying vec2 TEX0; \n"
"\n"
"void main()\n"
"{\n"
" vec4 texel = texture2D(SurfaceTex, TEX0); \n"
" vec4 texel = texture2D(Texture, TEX0); \n"
" gl_FragColor = texel; \n"
"}\n";
@ -59,26 +59,26 @@ const char PASSTHROUGH_VERT_SHADER[] =
const char PALETTE_FRAG_SHADER[] =
"#version 130\n"
"out vec4 FragColor;\n"
"uniform sampler2D SurfaceTex;\n"
"uniform sampler2D PaletteTex;\n"
"uniform sampler2D Texture;\n"
"uniform sampler2D PaletteTexture;\n"
"in vec4 TEX0;\n"
"\n"
"void main()\n"
"{\n"
" vec4 pIndex = texture(SurfaceTex, TEX0.xy);\n"
" FragColor = texture(PaletteTex, vec2(pIndex.r * (255.0/256.0) + (0.5/256.0), 0));\n"
" vec4 pIndex = texture(Texture, TEX0.xy);\n"
" FragColor = texture(PaletteTexture, vec2(pIndex.r * (255.0/256.0) + (0.5/256.0), 0));\n"
"}\n";
const char PASSTHROUGH_FRAG_SHADER[] =
"#version 130\n"
"out vec4 FragColor;\n"
"uniform sampler2D SurfaceTex;\n"
"uniform sampler2D Texture;\n"
"in vec4 TEX0;\n"
"\n"
"void main()\n"
"{\n"
" vec4 texel = texture(SurfaceTex, TEX0.xy);\n"
" vec4 texel = texture(Texture, TEX0.xy);\n"
" FragColor = texel;\n"
"}\n";
@ -104,26 +104,26 @@ const char PASSTHROUGH_VERT_SHADER_CORE[] =
const char PALETTE_FRAG_SHADER_CORE[] =
"#version 150\n"
"out vec4 FragColor;\n"
"uniform sampler2D SurfaceTex;\n"
"uniform sampler2D PaletteTex;\n"
"uniform sampler2D Texture;\n"
"uniform sampler2D PaletteTexture;\n"
"in vec4 TEX0;\n"
"\n"
"void main()\n"
"{\n"
" vec4 pIndex = texture(SurfaceTex, TEX0.xy);\n"
" FragColor = texture(PaletteTex, vec2(pIndex.r * (255.0/256.0) + (0.5/256.0), 0));\n"
" vec4 pIndex = texture(Texture, TEX0.xy);\n"
" FragColor = texture(PaletteTexture, vec2(pIndex.r * (255.0/256.0) + (0.5/256.0), 0));\n"
"}\n";
const char PASSTHROUGH_FRAG_SHADER_CORE[] =
"#version 150\n"
"out vec4 FragColor;\n"
"uniform sampler2D SurfaceTex;\n"
"uniform sampler2D Texture;\n"
"in vec4 TEX0;\n"
"\n"
"void main()\n"
"{\n"
" vec4 texel = texture(SurfaceTex, TEX0.xy);\n"
" vec4 texel = texture(Texture, TEX0.xy);\n"
" FragColor = texel;\n"
"}\n";

3
src/config.c
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@ -275,7 +275,8 @@ static void cfg_create_ini()
"\n"
"; Preliminary libretro shader support - (Requires 'renderer=opengl*') https://github.com/libretro/glsl-shaders\n"
"; 2x scaling example: https://imgur.com/a/kxsM1oY - 4x scaling example: https://imgur.com/a/wjrhpFV\n"
"; Note: Defauls to Bicubic Catmull-Rom if no shader specified or file was not found\n"
"; You can specify a full path to a .glsl shader file here or use one of the values listed below\n"
"; Possible values: Nearest neighbor, Bilinear, Bicubic\n"
"shader=Shaders\\cubic\\catmull-rom-bilinear.glsl\n"
"\n"
"; Window position, -32000 = center to screen\n"

43
src/render_ogl.c
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@ -185,15 +185,24 @@ static void ogl_build_programs()
(g_ddraw->render.viewport.width != g_ddraw->width ||
g_ddraw->render.viewport.height != g_ddraw->height))
{
g_ogl.scale_program = oglu_build_program(PASSTHROUGH_VERT_SHADER, CATMULL_ROM_FRAG_SHADER);
g_ogl.scale_program =
oglu_build_program(
PASSTHROUGH_VERT_SHADER,
_stricmp(g_ddraw->shader, "Nearest neighbor") == 0 ? PASSTHROUGH_FRAG_SHADER :
_stricmp(g_ddraw->shader, "Bilinear") == 0 ? PASSTHROUGH_FRAG_SHADER :
CATMULL_ROM_FRAG_SHADER);
if (!g_ogl.scale_program)
{
g_ogl.scale_program =
oglu_build_program(PASSTHROUGH_VERT_SHADER_CORE, CATMULL_ROM_FRAG_SHADER_CORE);
oglu_build_program(
PASSTHROUGH_VERT_SHADER_CORE,
_stricmp(g_ddraw->shader, "Nearest neighbor") == 0 ? PASSTHROUGH_FRAG_SHADER_CORE :
_stricmp(g_ddraw->shader, "Bilinear") == 0 ? PASSTHROUGH_FRAG_SHADER_CORE :
CATMULL_ROM_FRAG_SHADER_CORE);
}
bilinear = TRUE;
bilinear = _stricmp(g_ddraw->shader, "Nearest neighbor") != 0;
}
}
}
@ -365,10 +374,10 @@ static void ogl_init_main_program()
glUseProgram(g_ogl.main_program);
glUniform1i(glGetUniformLocation(g_ogl.main_program, "SurfaceTex"), 0);
glUniform1i(glGetUniformLocation(g_ogl.main_program, "Texture"), 0);
if (g_ddraw->bpp == 8)
glUniform1i(glGetUniformLocation(g_ogl.main_program, "PaletteTex"), 1);
glUniform1i(glGetUniformLocation(g_ogl.main_program, "PaletteTexture"), 1);
if (g_oglu_got_version3)
{
@ -521,11 +530,25 @@ static void ogl_init_scale_program()
output_size[0] = (float)g_ddraw->render.viewport.width;
output_size[1] = (float)g_ddraw->render.viewport.height;
glUniform2fv(glGetUniformLocation(g_ogl.scale_program, "OutputSize"), 1, output_size);
glUniform2fv(glGetUniformLocation(g_ogl.scale_program, "TextureSize"), 1, texture_size);
glUniform2fv(glGetUniformLocation(g_ogl.scale_program, "InputSize"), 1, input_size);
glUniform1i(glGetUniformLocation(g_ogl.scale_program, "FrameDirection"), 1);
glUniform1i(glGetUniformLocation(g_ogl.scale_program, "Texture"), 0);
GLint loc = glGetUniformLocation(g_ogl.scale_program, "OutputSize");
if (loc != -1)
glUniform2fv(loc, 1, output_size);
loc = glGetUniformLocation(g_ogl.scale_program, "TextureSize");
if (loc != -1)
glUniform2fv(loc, 1, texture_size);
loc = glGetUniformLocation(g_ogl.scale_program, "InputSize");
if (loc != -1)
glUniform2fv(loc, 1, input_size);
loc = glGetUniformLocation(g_ogl.scale_program, "FrameDirection");
if (loc != -1)
glUniform1i(loc, 1);
loc = glGetUniformLocation(g_ogl.scale_program, "Texture");
if (loc != -1)
glUniform1i(loc, 0);
const float mvp_matrix[16] = {
1,0,0,0,