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SDF & MONOSPACE FONT RENDERING

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tobid7
2026-09-05 11:56:13 +02:00
parent b29e298d55
commit 322ce785b9
14 changed files with 268 additions and 161 deletions
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backends/source/gfx_citro3d.cpp
+41 -20
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@@ -84,7 +84,7 @@ struct GfxCitro3D::Impl {
}
}
void SetupPixelStage() {
void SetupPixelStage(bool sdf) {
shaderProgramUse(&pShader);
C3D_BindProgram(&pShader);
C3D_SetAttrInfo(&pAttr);
@@ -92,25 +92,46 @@ struct GfxCitro3D::Impl {
if (!CurrentTex) return;
C3D_TexEnv* env = C3D_GetTexEnv(0);
C3D_TexEnvInit(env);
switch (CurrentTex->fmt) {
case GPU_A4:
case GPU_A8:
case GPU_L4:
case GPU_L8:
C3D_TexEnvSrc(env, C3D_Alpha, GPU_TEXTURE0);
C3D_TexEnvFunc(env, C3D_RGB, GPU_REPLACE);
C3D_TexEnvFunc(env, C3D_Alpha, GPU_MODULATE);
break;
case GPU_RGB565:
C3D_TexEnvSrc(env, C3D_Alpha, GPU_TEXTURE0);
C3D_TexEnvFunc(env, C3D_RGB, GPU_MODULATE);
C3D_TexEnvFunc(env, C3D_Alpha, GPU_REPLACE);
break;
C3D_TexEnv* env1 = C3D_GetTexEnv(1);
C3D_TexEnvInit(env1);
default:
C3D_TexEnvSrc(env, C3D_Both, GPU_TEXTURE0);
C3D_TexEnvFunc(env, C3D_Both, GPU_MODULATE);
break;
if (sdf) {
C3D_TexEnvSrc(env, C3D_RGB, GPU_PRIMARY_COLOR);
C3D_TexEnvFunc(env, C3D_RGB, GPU_REPLACE);
C3D_TexEnvColor(env, 0x60606060);
C3D_TexEnvSrc(env, C3D_Alpha, GPU_TEXTURE0, GPU_CONSTANT);
C3D_TexEnvOpAlpha(env, GPU_TEVOP_A_SRC_ALPHA, GPU_TEVOP_A_SRC_ALPHA);
C3D_TexEnvFunc(env, C3D_Alpha, GPU_SUBTRACT);
C3D_TexEnvScale(env, C3D_Alpha, GPU_TEVSCALE_4);
C3D_TexEnvSrc(env1, C3D_RGB, GPU_PREVIOUS);
C3D_TexEnvFunc(env1, C3D_RGB, GPU_REPLACE);
C3D_TexEnvSrc(env1, C3D_Alpha, GPU_PREVIOUS, GPU_PRIMARY_COLOR);
C3D_TexEnvOpAlpha(env, GPU_TEVOP_A_SRC_ALPHA, GPU_TEVOP_A_SRC_ALPHA);
C3D_TexEnvFunc(env1, C3D_Alpha, GPU_MODULATE);
} else {
switch (CurrentTex->fmt) {
case GPU_A4:
case GPU_A8:
case GPU_L4:
case GPU_L8:
C3D_TexEnvSrc(env, C3D_Alpha, GPU_TEXTURE0);
C3D_TexEnvFunc(env, C3D_RGB, GPU_REPLACE);
C3D_TexEnvFunc(env, C3D_Alpha, GPU_MODULATE);
break;
case GPU_RGB565:
C3D_TexEnvSrc(env, C3D_Alpha, GPU_TEXTURE0);
C3D_TexEnvFunc(env, C3D_RGB, GPU_MODULATE);
C3D_TexEnvFunc(env, C3D_Alpha, GPU_REPLACE);
break;
default:
C3D_TexEnvSrc(env, C3D_Both, GPU_TEXTURE0);
C3D_TexEnvFunc(env, C3D_Both, GPU_MODULATE);
break;
}
}
}
};
@@ -146,7 +167,7 @@ void GfxCitro3D::SysDeinit() {
void GfxCitro3D::Submit(size_t count, size_t start) {
if (!impl) return;
BindTexture(CurrentTex);
impl->SetupPixelStage(); // needs to be called after
impl->SetupPixelStage(CurrentTexIsSDF); // needs to be called after
C3D_Mtx proj;
Mtx_OrthoTilt(&proj, 0.f, ViewPort.x, ViewPort.y, 0.f, 1.f, -1.f, false);
C3D_FVUnifMtx4x4(GPU_VERTEX_SHADER, impl->uLocProjection, &proj);
backends/source/gfx_directx9.cpp
+26 -19
View File
@@ -15,41 +15,45 @@ static const char* g_vsCode = R"(
float4x4 projection;
struct VS_IN {
float2 pos : POSITION0;
float2 uv : TEXCOORD0;
float4 col : COLOR0;
float2 pos : POSITION0;
float2 uv : TEXCOORD0;
float4 col : COLOR0;
};
struct VS_OUT {
float4 pos : POSITION0;
float2 uv : TEXCOORD0;
float4 col : COLOR0;
float4 pos : POSITION0;
float2 uv : TEXCOORD0;
float4 col : COLOR0;
};
VS_OUT main(VS_IN input) {
VS_OUT o;
o.pos = mul(projection, float4(input.pos, 0.0, 1.0));
o.uv = input.uv;
o.col = input.col.bgra;
return o;
VS_OUT o;
o.pos = mul(projection, float4(input.pos, 0.0, 1.0));
o.uv = input.uv;
o.col = input.col.bgra;
return o;
}
)";
static const char* g_psCode = R"(
sampler2D tex : register(s0);
float alfa;
float alfa : register(c1);
float is_sdf : register(c2);
struct PS_IN {
float2 uv : TEXCOORD0;
float4 col : COLOR0;
float2 uv : TEXCOORD0;
float4 col : COLOR0;
};
float4 main(PS_IN input) : COLOR0 {
float4 tc = tex2D(tex, input.uv);
if (alfa > 0.5)
return float4(input.col.rgb, tc.a * input.col.a);
else
return tc * input.col;
float4 tc = tex2D(tex, input.uv);
if (is_sdf > 0.5) {
float alpha = smoothstep(0.45, 0.55, tc.a);
return float4(input.col.rgb, alpha * input.col.a);
} else if (alfa > 0.5)
return float4(input.col.rgb, tc.a * input.col.a);
else
return tc * input.col;
}
)";
@@ -159,6 +163,9 @@ void GfxDirectX9::BindTexture(TextureID id) {
float v = a8 ? 1.0f : 0.0f;
impl->Device->SetPixelShaderConstantF(0, &v, 1);
float sdf = CurrentTexIsSDF ? 1.0f : 0.0f;
impl->Device->SetPixelShaderConstantF(1, &sdf, 1);
}
void GfxDirectX9::SysReset() {
backends/source/gfx_opengl2.cpp
+8 -1
View File
@@ -38,10 +38,15 @@ const char* GfxOpenGL2::pFragCode = R"(
uniform sampler2D tex;
uniform bool alfa;
uniform bool is_sdf;
void main() {
vec4 tc = texture2D(tex, oUV);
if (alfa) {
if (is_sdf) {
float dist = tc.a;
float alpha = smoothstep(0.45, 0.55, dist);
gl_FragColor = vec4(oColor.rgb, alpha * oColor.a);
} else if (alfa) {
gl_FragColor = vec4(oColor.rgb, tc.a * oColor.a);
} else {
gl_FragColor = tc * oColor;
@@ -78,6 +83,7 @@ void GfxOpenGL2::SysInit() {
pSetupShaderAttribs(pShader);
pLocTex = glGetUniformLocation(pShader, "tex");
pLocAlfa = glGetUniformLocation(pShader, "alfa");
pLocIsSDF = glGetUniformLocation(pShader, "is_sdf");
pLocProjection = glGetUniformLocation(pShader, "projection");
glBindBuffer(GL_ARRAY_BUFFER, 0);
@@ -114,6 +120,7 @@ void GfxOpenGL2::BindTexture(TextureID id) {
GLint fmt = 0;
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_INTERNAL_FORMAT, &fmt);
glUniform1i(pLocAlfa, fmt == GL_ALPHA);
glUniform1i(pLocIsSDF, CurrentTexIsSDF);
}
void GfxOpenGL2::SysReset() {
backends/source/gfx_opengl3.cpp
+2
View File
@@ -47,6 +47,7 @@ void GfxOpenGL3::SysInit() {
pLocTex = glGetUniformLocation(pShader, "tex");
pLocAlfa = glGetUniformLocation(pShader, "push.alfa");
pLocIsSDF = glGetUniformLocation(pShader, "push.is_sdf");
pLocProjection = glGetUniformLocation(pShader, "ubo.projection");
glBindBuffer(GL_ARRAY_BUFFER, 0);
@@ -81,6 +82,7 @@ void GfxOpenGL3::BindTexture(TextureID id) {
GLint fmt = 0;
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_INTERNAL_FORMAT, &fmt);
glUniform1i(pLocAlfa, fmt == GL_R8);
glUniform1i(pLocIsSDF, CurrentTexIsSDF);
}
void GfxOpenGL3::SysReset() {