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backend updates

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pd-3ds:
Add support for RGB565 textures
pd-desktop:
Add support for A8 textures
Add glfw callback chain to not break other libs using the same callback
This commit is contained in:
tobid7
2026-01-05 14:37:57 +01:00
parent 3575a6787d
commit eb5d5f9974
5 changed files with 31 additions and 5 deletions
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13
backends/desktop/source/bknd-gfx.cpp
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@@ -53,10 +53,15 @@ const char* frag_shader = R"(
varying vec4 oColor;
uniform sampler2D tex;
uniform bool alfa;
void main() {
vec4 tc = texture2D(tex, oUV);
gl_FragColor = tc*oColor;
vec4 tc = texture2D(tex, oUV);
if (alfa) {
gl_FragColor = vec4(oColor.rgb, tc.a * oColor.a);
} else {
gl_FragColor = tc * oColor;
}
}
)";
@@ -138,6 +143,7 @@ void GfxGL2::Init() {
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, IBO);
pLocTex = glGetUniformLocation(Shader, "tex");
pLocAlfa = glGetUniformLocation(Shader, "alfa");
pLocProjection = glGetUniformLocation(Shader, "projection");
glBindBuffer(GL_ARRAY_BUFFER, 0);
@@ -172,6 +178,9 @@ void GfxGL2::BindTex(PD::Li::TexAddress addr) {
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, (GLuint)addr);
glUniform1i(pLocTex, 0);
GLint fmt = 0;
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_INTERNAL_FORMAT, &fmt);
glUniform1i(pLocAlfa, fmt == GL_ALPHA);
}
void GfxGL2::RenderDrawData(const std::vector<PD::Li::Command::Ref>& Commands) {