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Added ability to skip top level mips when parsing texture format.

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This commit is contained in:
Branimir Karadžić
2014-02-19 22:34:53 -08:00
parent d7f0b21487
commit 753b9fdd15
10 changed files with 70 additions and 47 deletions
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22
src/renderer_gl.cpp
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@@ -1499,13 +1499,17 @@ namespace bgfx
return true;
}
void Texture::create(const Memory* _mem, uint32_t _flags)
void Texture::create(const Memory* _mem, uint32_t _flags, uint8_t _skip)
{
ImageContainer imageContainer;
if (imageParse(imageContainer, _mem->data, _mem->size) )
{
uint8_t numMips = imageContainer.m_numMips;
const uint32_t startLod = bx::uint32_min(_skip, numMips-1);
numMips -= startLod;
const uint32_t textureWidth = bx::uint32_max(1, imageContainer.m_width >>startLod);
const uint32_t textureHeight = bx::uint32_max(1, imageContainer.m_height>>startLod);
GLenum target = GL_TEXTURE_2D;
if (imageContainer.m_cubeMap)
@@ -1518,8 +1522,8 @@ namespace bgfx
}
if (!init(target
, imageContainer.m_width
, imageContainer.m_height
, textureWidth
, textureHeight
, imageContainer.m_format
, numMips
, _flags
@@ -1552,13 +1556,13 @@ namespace bgfx
uint8_t* temp = NULL;
if (convert || swizzle)
{
temp = (uint8_t*)BX_ALLOC(g_allocator, imageContainer.m_width*imageContainer.m_height*4);
temp = (uint8_t*)BX_ALLOC(g_allocator, textureWidth*textureHeight*4);
}
for (uint8_t side = 0, numSides = imageContainer.m_cubeMap ? 6 : 1; side < numSides; ++side)
{
uint32_t width = imageContainer.m_width;
uint32_t height = imageContainer.m_height;
uint32_t width = textureWidth;
uint32_t height = textureHeight;
uint32_t depth = imageContainer.m_depth;
for (uint32_t lod = 0, num = numMips; lod < num; ++lod)
@@ -1568,7 +1572,7 @@ namespace bgfx
depth = bx::uint32_max(1, depth);
ImageMip mip;
if (imageGetRawData(imageContainer, side, lod, _mem->data, _mem->size, mip) )
if (imageGetRawData(imageContainer, side, lod+startLod, _mem->data, _mem->size, mip) )
{
if (compressed)
{
@@ -2962,9 +2966,9 @@ namespace bgfx
s_renderCtx->m_program[_handle.idx].destroy();
}
void Context::rendererCreateTexture(TextureHandle _handle, Memory* _mem, uint32_t _flags)
void Context::rendererCreateTexture(TextureHandle _handle, Memory* _mem, uint32_t _flags, uint8_t _skip)
{
s_renderCtx->m_textures[_handle.idx].create(_mem, _flags);
s_renderCtx->m_textures[_handle.idx].create(_mem, _flags, _skip);
}
void Context::rendererUpdateTextureBegin(TextureHandle /*_handle*/, uint8_t /*_side*/, uint8_t /*_mip*/)