mirror of https://github.com/bkaradzic/bgfx
texturev: Added checkeboard background for transparent images.
This commit is contained in:
Branimir Karadžić
parent
321797f162
commit
33a83de1e1
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@ -35,6 +35,9 @@ namespace stl = tinystl;
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#include "fs_texture_cube.bin.h"
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#include "fs_texture_sdf.bin.h"
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#define BACKGROUND_VIEW_ID 0
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#define IMAGE_VIEW_ID 1
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#define BGFX_TEXTUREV_VERSION_MAJOR 1
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#define BGFX_TEXTUREV_VERSION_MINOR 0
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@ -435,7 +438,7 @@ struct PosUvColorVertex
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bgfx::VertexDecl PosUvColorVertex::ms_decl;
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bool screenQuad(int32_t _x, int32_t _y, int32_t _width, uint32_t _height, uint32_t _abgr, bool _originBottomLeft = false)
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bool screenQuad(int32_t _x, int32_t _y, int32_t _width, uint32_t _height, uint32_t _abgr, float _maxu = 1.0f, float _maxv = 1.0f)
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{
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if (6 == bgfx::getAvailTransientVertexBuffer(6, PosUvColorVertex::ms_decl) )
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{
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@ -451,14 +454,10 @@ bool screenQuad(int32_t _x, int32_t _y, int32_t _width, uint32_t _height, uint32
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const float maxx = minx+widthf;
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const float maxy = miny+heightf;
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float m_halfTexel = 0.0f;
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const float texelHalfW = m_halfTexel/widthf;
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const float texelHalfH = m_halfTexel/heightf;
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const float minu = texelHalfW;
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const float maxu = 1.0f - texelHalfW;
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const float minv = _originBottomLeft ? texelHalfH+1.0f : texelHalfH ;
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const float maxv = _originBottomLeft ? texelHalfH : texelHalfH+1.0f;
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const float minu = 0.0f;
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const float maxu = _maxu;
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const float minv = 0.0f;
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const float maxv = _maxv;
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vertex[0].m_x = minx;
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vertex[0].m_y = miny;
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@ -717,9 +716,9 @@ int _main_(int _argc, char** _argv)
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bgfx::reset(width, height, reset);
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// Set view 0 clear state.
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bgfx::setViewClear(0
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bgfx::setViewClear(BACKGROUND_VIEW_ID
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, BGFX_CLEAR_COLOR|BGFX_CLEAR_DEPTH
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, 0x101010ff
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, 0x000000ff
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, 1.0f
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, 0
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);
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@ -739,7 +738,6 @@ int _main_(int _argc, char** _argv)
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, fsTexture
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, true
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);
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bgfx::ProgramHandle textureArrayProgram = bgfx::createProgram(
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vsTexture
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, bgfx::isValid(fsTextureArray)
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@ -763,6 +761,21 @@ int _main_(int _argc, char** _argv)
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bgfx::UniformHandle u_mtx = bgfx::createUniform("u_mtx", bgfx::UniformType::Mat4);
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bgfx::UniformHandle u_params = bgfx::createUniform("u_params", bgfx::UniformType::Vec4);
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const uint32_t checkerBoardSize = 64;
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bgfx::TextureHandle checkerBoard;
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{
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const bgfx::Memory* mem = bgfx::alloc(checkerBoardSize*checkerBoardSize*4);
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bimg::imageCheckerboard(mem->data, checkerBoardSize, checkerBoardSize, 8, 0xff8e8e8e, 0xff5d5d5d);
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checkerBoard = bgfx::createTexture2D(checkerBoardSize, checkerBoardSize, false, 1
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, bgfx::TextureFormat::BGRA8
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, 0
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| BGFX_TEXTURE_MIN_POINT
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| BGFX_TEXTURE_MIP_POINT
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| BGFX_TEXTURE_MAG_POINT
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, mem
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);
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}
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float speed = 0.37f;
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float time = 0.0f;
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@ -988,12 +1001,37 @@ int _main_(int _argc, char** _argv)
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posy.set(view.m_posy, transitionTime);
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float ortho[16];
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bx::mtxOrtho(ortho, 0.0f, width, height, 0.0f, 0.0f, 1000.0f);
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bgfx::setViewTransform(BACKGROUND_VIEW_ID, NULL, ortho);
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bgfx::setViewRect(BACKGROUND_VIEW_ID, 0, 0, uint16_t(width), uint16_t(height) );
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screenQuad(
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0
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, 0
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, width
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, height
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, view.m_alpha ? UINT32_MAX : 0
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, float(width )/float(checkerBoardSize)
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, float(height)/float(checkerBoardSize)
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);
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bgfx::setTexture(0
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, s_texColor
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, checkerBoard
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);
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bgfx::setState(0
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| BGFX_STATE_RGB_WRITE
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| BGFX_STATE_ALPHA_WRITE
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);
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bgfx::submit(BACKGROUND_VIEW_ID
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, textureProgram
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);
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float px = posx.getValue();
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float py = posy.getValue();
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bx::mtxOrtho(ortho, px, px+width, py+height, py, 0.0f, 1000.0f);
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bgfx::setViewTransform(0, NULL, ortho);
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bgfx::setViewRect(0, 0, 0, uint16_t(width), uint16_t(height) );
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bgfx::touch(0);
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bgfx::setViewTransform(IMAGE_VIEW_ID, NULL, ortho);
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bgfx::setViewRect(IMAGE_VIEW_ID, 0, 0, uint16_t(width), uint16_t(height) );
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bgfx::dbgTextClear();
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@ -1048,7 +1086,7 @@ int _main_(int _argc, char** _argv)
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| BGFX_STATE_ALPHA_WRITE
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| (view.m_alpha ? BGFX_STATE_BLEND_ALPHA : BGFX_STATE_NONE)
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);
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bgfx::submit(0
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bgfx::submit(IMAGE_VIEW_ID
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, view.m_info.cubeMap ? textureCubeProgram
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: 1 < view.m_info.numLayers ? textureArrayProgram
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: view.m_sdf ? textureSdfProgram
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@ -1063,6 +1101,7 @@ int _main_(int _argc, char** _argv)
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{
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bgfx::destroyTexture(texture);
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}
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bgfx::destroyTexture(checkerBoard);
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bgfx::destroyUniform(s_texColor);
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bgfx::destroyUniform(u_mtx);
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bgfx::destroyUniform(u_params);
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