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emulator opengl: Added glUtilsPixelBitSize function to glUtils.

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moved pixel size calculation from GLClientState to glUtils to be used
outside the client state scope. (needed for the renderControl encoder
which will follow in next commit).

Change-Id: I5adbc40b241537054c6743e2afc52ba44454664f
This commit is contained in:
Guy Zadikario
2011-04-10 10:31:14 +03:00
parent caafd4df2e
commit fc2d0b09ec
3 changed files with 58 additions and 50 deletions
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51
tools/emulator/opengl/shared/OpenglCodecCommon/GLClientState.cpp
View File

@@ -164,56 +164,7 @@ int GLClientState::setPixelStore(GLenum param, GLint value)
size_t GLClientState::pixelDataSize(GLsizei width, GLsizei height, GLenum format, GLenum type, int pack)
{
int components = 0;
int componentsize = 0;
int pixelsize = 0;
switch(type) {
case GL_UNSIGNED_BYTE:
componentsize = 1;
break;
case GL_UNSIGNED_SHORT_5_6_5:
case GL_UNSIGNED_SHORT_4_4_4_4:
case GL_UNSIGNED_SHORT_5_5_5_1:
pixelsize = 2;
break;
default:
ERR("pixelDataSize: unknown pixel type - assuming pixel data 0\n");
componentsize = 0;
}
if (pixelsize == 0) {
switch(format) {
#if 0
case GL_RED:
case GL_GREEN:
case GL_BLUE:
#endif
case GL_ALPHA:
case GL_LUMINANCE:
components = 1;
break;
case GL_LUMINANCE_ALPHA:
components = 2;
break;
case GL_RGB:
#if 0
case GL_BGR:
#endif
components = 3;
break;
case GL_RGBA:
#if 0
case GL_BGRA:
#endif
components = 4;
break;
default:
ERR("pixelDataSize: unknown pixel format...\n");
components = 0;
}
pixelsize = components * componentsize;
}
int pixelsize = glUtilsPixelBitSize(format, type) >> 3;
int alignment = pack ? m_pixelStore.pack_alignment : m_pixelStore.unpack_alignment;

56
tools/emulator/opengl/shared/OpenglCodecCommon/glUtils.cpp
View File

@@ -145,3 +145,59 @@ void glUtilsPackPointerData(unsigned char *dst, unsigned char *src,
}
}
}
int glUtilsPixelBitSize(GLenum format, GLenum type)
{
int components = 0;
int componentsize = 0;
int pixelsize = 0;
switch(type) {
case GL_UNSIGNED_BYTE:
componentsize = 8;
break;
case GL_UNSIGNED_SHORT_5_6_5:
case GL_UNSIGNED_SHORT_4_4_4_4:
case GL_UNSIGNED_SHORT_5_5_5_1:
case GL_RGB565_OES:
case GL_RGB5_A1_OES:
case GL_RGBA4_OES:
pixelsize = 16;
break;
default:
ERR("glUtilsPixelBitSize: unknown pixel type - assuming pixel data 0\n");
componentsize = 0;
}
if (pixelsize == 0) {
switch(format) {
#if 0
case GL_RED:
case GL_GREEN:
case GL_BLUE:
#endif
case GL_ALPHA:
case GL_LUMINANCE:
components = 1;
break;
case GL_LUMINANCE_ALPHA:
components = 2;
break;
case GL_RGB:
#if 0
case GL_BGR:
#endif
components = 3;
break;
case GL_RGBA:
case GL_BGRA_EXT:
components = 4;
break;
default:
ERR("glUtilsPixelBitSize: unknown pixel format...\n");
components = 0;
}
pixelsize = components * componentsize;
}
return pixelsize;
}

1
tools/emulator/opengl/shared/OpenglCodecCommon/glUtils.h
View File

@@ -49,6 +49,7 @@ extern "C" {
void glUtilsPackPointerData(unsigned char *dst, unsigned char *str,
int size, GLenum type, unsigned int stride,
unsigned int datalen);
int glUtilsPixelBitSize(GLenum format, GLenum type);
#ifdef __cplusplus
};
#endif