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render to texture test

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FunkyFr3sh 2018-09-18 01:14:18 +02:00
parent 9400eb7b75
commit 4211df4c29
1 changed files with 98 additions and 0 deletions
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98
src/render.c
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@ -59,6 +59,7 @@ static void InitScaleProgram();
static void Render();
static void DeleteContext(HGLRC context);
static BOOL TextureUploadTest();
static BOOL ShaderTest();
BOOL detect_cutscene();
DWORD WINAPI render_soft_main(void);
@ -79,6 +80,7 @@ DWORD WINAPI render_main(void)
InitScaleProgram();
GotError = GotError || !TextureUploadTest();
GotError = GotError || !ShaderTest();
GotError = GotError || glGetError() != GL_NO_ERROR;
UseOpenGL = !(ddraw->autorenderer && (!PaletteConvertProgram || GotError));
@ -927,3 +929,99 @@ static BOOL TextureUploadTest()
return TRUE;
}
static BOOL ShaderTest()
{
if (OpenGL_GotVersion3 && PaletteConvertProgram)
{
memset(SurfaceTex, 0, SurfaceTexHeight * SurfaceTexWidth * sizeof(int));
GLuint fboId = 0;
glGenFramebuffers(1, &fboId);
glBindFramebuffer(GL_FRAMEBUFFER, fboId);
GLuint fboTexId = 0;
glGenTextures(1, &fboTexId);
glBindTexture(GL_TEXTURE_2D, fboTexId);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, SurfaceTexWidth, SurfaceTexHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, SurfaceTex);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, fboTexId, 0);
GLenum drawBuffers[1] = { GL_COLOR_ATTACHMENT0 };
glDrawBuffers(1, drawBuffers);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE)
{
static char gray0pal[] = { 128,128,128,128 };
glBindTexture(GL_TEXTURE_2D, PaletteTexIds[0]);
glTexSubImage2D(
GL_TEXTURE_2D,
0,
0,
0,
1,
1,
GL_RGBA,
GL_UNSIGNED_BYTE,
gray0pal);
glBindTexture(GL_TEXTURE_2D, SurfaceTexIds[0]);
glTexSubImage2D(
GL_TEXTURE_2D,
0,
0,
0,
SurfaceTexWidth,
SurfaceTexHeight,
SurfaceFormat,
GL_UNSIGNED_BYTE,
SurfaceTex);
glViewport(0, 0, SurfaceTexWidth, SurfaceTexHeight);
glUseProgram(PaletteConvertProgram);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, PaletteTexIds[0]);
glActiveTexture(GL_TEXTURE0);
glBindVertexArray(MainVAO);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, 0);
glBindVertexArray(0);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, 0);
glActiveTexture(GL_TEXTURE0);
glFinish();
glBindTexture(GL_TEXTURE_2D, fboTexId);
glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, SurfaceTex);
glFinish();
int i;
for (i = 0; i < SurfaceTexHeight * SurfaceTexWidth; i++)
{
if (SurfaceTex[i] != 0x80808080)
return FALSE;
}
}
glBindTexture(GL_TEXTURE_2D, 0);
if (glDeleteFramebuffers)
glDeleteFramebuffers(1, &fboId);
glDeleteTextures(1, &fboTexId);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
}
return TRUE;
}