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OpenGL 1.0: Maybe working textures

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UnknownShadow200 2024-07-30 19:37:38 +10:00
parent 056bfb3e2f
commit 96840b1a03
1 changed files with 34 additions and 5 deletions
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39
src/Graphics_GL1.c
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@ -562,20 +562,49 @@ static void APIENTRY legacy_bufferSubData(GLenum target, cc_uintptr offset, cc_u
}
struct GL10Texture {
int width, height;
unsigned char* pixels;
};
static struct GL10Texture* gl10_tex;
static void APIENTRY gl10_bindTexture(GLenum target, GLuint texture) {
gl10_tex = (struct GL10Texture*)texture;
if (gl10_tex && gl10_tex->pixels) {
glTexImage2D(GL_TEXTURE_2D, 0, 4, gl10_tex->width, gl10_tex->height, 0, GL_RGBA, GL_UNSIGNED_BYTE, gl10_tex->pixels);
} else {
BitmapCol pixel = BITMAPCOLOR_WHITE;
glTexImage2D(GL_TEXTURE_2D, 0, 4, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, &pixel);
}
}
static void APIENTRY gl10_deleteTexture(GLsizei n, const GLuint* textures) {
struct GL10Texture* tex = (struct GL10Texture*)textures[0];
if (tex->pixels) Mem_Free(tex->pixels);
if (tex) Mem_Free(tex);
}
static void APIENTRY gl10_genTexture(GLsizei n, GLuint* textures) {
textures[0] = (GLuint)Mem_AllocCleared(1, sizeof(struct GL10Texture), "GL 1.0 texture");
}
}
static void APIENTRY gl10_texImage(GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid* pixels) {
int i;
gl10_tex->width = width;
gl10_tex->height = height;
gl10_tex->pixels = Mem_Alloc(width * height, 4, "GL 1.0 pixels");
Mem_Copy(gl10_tex->pixels, pixels, width * height * 4);
for (i = 0; i < width * height * 4; i += 4)
{
cc_uint8 t = gl10_tex->pixels[i + 2];
gl10_tex->pixels[i + 2] = gl10_tex->pixels[i + 0];
gl10_tex->pixels[i + 0] = t;
}
}
static void APIENTRY gl10_texSubImage(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid* pixels) {
/* TODO */
}
static void APIENTRY gl10_disableClientState(GLenum target) { }