diff options
Diffstat (limited to 'src/rlgl.c')
| -rw-r--r-- | src/rlgl.c | 319 |
1 files changed, 160 insertions, 159 deletions
@@ -170,6 +170,11 @@ #define GL_UNSIGNED_SHORT_4_4_4_4 0x8033 #endif +#if defined(GRAPHICS_API_OPENGL_21) + #define GL_LUMINANCE 0x1909 + #define GL_LUMINANCE_ALPHA 0x190A +#endif + #if defined(GRAPHICS_API_OPENGL_ES2) #define glClearDepth glClearDepthf #define GL_READ_FRAMEBUFFER GL_FRAMEBUFFER @@ -227,7 +232,7 @@ typedef struct DrawCall { typedef struct VrStereoConfig { RenderTexture2D stereoFbo; // VR stereo rendering framebuffer Shader distortionShader; // VR stereo rendering distortion shader - //Rectangle eyesViewport[2]; // VR stereo rendering eyes viewports + Rectangle eyesViewport[2]; // VR stereo rendering eyes viewports Matrix eyesProjection[2]; // VR stereo rendering eyes projection matrices Matrix eyesViewOffset[2]; // VR stereo rendering eyes view offset matrices } VrStereoConfig; @@ -262,7 +267,9 @@ static Vector3 *tempBuffer; static int tempBufferCount = 0; static bool useTempBuffer = false; -// Shader Programs +// Shaders +static unsigned int defaultVShaderId; // Default vertex shader id (used by default shader program) +static unsigned int defaultFShaderId; // Default fragment shader Id (used by default shader program) static Shader defaultShader; // Basic shader, support vertex color and diffuse texture static Shader currentShader; // Shader to be used on rendering (by default, defaultShader) @@ -319,7 +326,9 @@ static int screenHeight; // Default framebuffer height //---------------------------------------------------------------------------------- #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) static void LoadTextureCompressed(unsigned char *data, int width, int height, int compressedFormat, int mipmapCount); -static unsigned int LoadShaderProgram(const char *vShaderStr, const char *fShaderStr); // Load custom shader strings and return program id + +static unsigned int CompileShader(const char *shaderStr, int type); // Compile custom shader and return shader id +static unsigned int LoadShaderProgram(unsigned int vShaderId, unsigned int fShaderId); // Load custom shader program static Shader LoadShaderDefault(void); // Load default shader (just vertex positioning and texture coloring) static void SetShaderDefaultLocations(Shader *shader); // Bind default shader locations (attributes and uniforms) @@ -1378,7 +1387,40 @@ unsigned int rlLoadTexture(void *data, int width, int height, int format, int mi glBindTexture(GL_TEXTURE_2D, id); -#if defined(GRAPHICS_API_OPENGL_33) +#if defined(GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_21) || defined(GRAPHICS_API_OPENGL_ES2) + // NOTE: on OpenGL ES 2.0 (WebGL), internalFormat must match format and options allowed are: GL_LUMINANCE, GL_RGB, GL_RGBA + switch (format) + { + case UNCOMPRESSED_GRAYSCALE: glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, width, height, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, (unsigned char *)data); break; + case UNCOMPRESSED_GRAY_ALPHA: glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE_ALPHA, width, height, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, (unsigned char *)data); break; + case UNCOMPRESSED_R5G6B5: glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, (unsigned short *)data); break; + case UNCOMPRESSED_R8G8B8: glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, (unsigned char *)data); break; + case UNCOMPRESSED_R5G5B5A1: glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, (unsigned short *)data); break; + case UNCOMPRESSED_R4G4B4A4: glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, (unsigned short *)data); break; + case UNCOMPRESSED_R8G8B8A8: glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, (unsigned char *)data); break; + #if defined(GRAPHICS_API_OPENGL_21) + case COMPRESSED_DXT1_RGB: if (texCompDXTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, mipmapCount); break; + case COMPRESSED_DXT1_RGBA: if (texCompDXTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, mipmapCount); break; + case COMPRESSED_DXT3_RGBA: if (texCompDXTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, mipmapCount); break; + case COMPRESSED_DXT5_RGBA: if (texCompDXTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, mipmapCount); break; + #endif + #if defined(GRAPHICS_API_OPENGL_ES2) + case UNCOMPRESSED_R32G32B32: if (texFloatSupported) glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_FLOAT, (float *)data); break; // NOTE: Requires extension OES_texture_float + case COMPRESSED_DXT1_RGB: if (texCompDXTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, mipmapCount); break; + case COMPRESSED_DXT1_RGBA: if (texCompDXTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, mipmapCount); break; + case COMPRESSED_DXT3_RGBA: if (texCompDXTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, mipmapCount); break; // NOTE: Not supported by WebGL + case COMPRESSED_DXT5_RGBA: if (texCompDXTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, mipmapCount); break; // NOTE: Not supported by WebGL + case COMPRESSED_ETC1_RGB: if (texCompETC1Supported) LoadTextureCompressed((unsigned char *)data, width, height, GL_ETC1_RGB8_OES, mipmapCount); break; // NOTE: Requires OpenGL ES 2.0 or OpenGL 4.3 + case COMPRESSED_ETC2_RGB: if (texCompETC2Supported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGB8_ETC2, mipmapCount); break; // NOTE: Requires OpenGL ES 3.0 or OpenGL 4.3 + case COMPRESSED_ETC2_EAC_RGBA: if (texCompETC2Supported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA8_ETC2_EAC, mipmapCount); break; // NOTE: Requires OpenGL ES 3.0 or OpenGL 4.3 + case COMPRESSED_PVRT_RGB: if (texCompPVRTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG, mipmapCount); break; // NOTE: Requires PowerVR GPU + case COMPRESSED_PVRT_RGBA: if (texCompPVRTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG, mipmapCount); break; // NOTE: Requires PowerVR GPU + case COMPRESSED_ASTC_4x4_RGBA: if (texCompASTCSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_ASTC_4x4_KHR, mipmapCount); break; // NOTE: Requires OpenGL ES 3.1 or OpenGL 4.3 + case COMPRESSED_ASTC_8x8_RGBA: if (texCompASTCSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_ASTC_8x8_KHR, mipmapCount); break; // NOTE: Requires OpenGL ES 3.1 or OpenGL 4.3 + #endif + default: TraceLog(LOG_WARNING, "Texture format not supported"); break; + } +#elif defined(GRAPHICS_API_OPENGL_33) // NOTE: We define internal (GPU) format as GL_RGBA8 (probably BGRA8 in practice, driver takes care) // NOTE: On embedded systems, we let the driver choose the best internal format @@ -1431,33 +1473,6 @@ unsigned int rlLoadTexture(void *data, int width, int height, int format, int mi case COMPRESSED_ASTC_8x8_RGBA: if (texCompASTCSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_ASTC_8x8_KHR, mipmapCount); break; // NOTE: Requires OpenGL ES 3.1 or OpenGL 4.3 default: TraceLog(LOG_WARNING, "Texture format not recognized"); break; } -#elif defined(GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_ES2) - // NOTE: on OpenGL ES 2.0 (WebGL), internalFormat must match format and options allowed are: GL_LUMINANCE, GL_RGB, GL_RGBA - switch (format) - { - case UNCOMPRESSED_GRAYSCALE: glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, width, height, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, (unsigned char *)data); break; - case UNCOMPRESSED_GRAY_ALPHA: glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE_ALPHA, width, height, 0, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, (unsigned char *)data); break; - case UNCOMPRESSED_R5G6B5: glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, (unsigned short *)data); break; - case UNCOMPRESSED_R8G8B8: glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, (unsigned char *)data); break; - case UNCOMPRESSED_R5G5B5A1: glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, (unsigned short *)data); break; - case UNCOMPRESSED_R4G4B4A4: glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, (unsigned short *)data); break; - case UNCOMPRESSED_R8G8B8A8: glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, (unsigned char *)data); break; -#if defined(GRAPHICS_API_OPENGL_ES2) - case UNCOMPRESSED_R32G32B32: if (texFloatSupported) glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_FLOAT, (float *)data); break; // NOTE: Requires extension OES_texture_float - case COMPRESSED_DXT1_RGB: if (texCompDXTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, mipmapCount); break; - case COMPRESSED_DXT1_RGBA: if (texCompDXTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, mipmapCount); break; - case COMPRESSED_DXT3_RGBA: if (texCompDXTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, mipmapCount); break; // NOTE: Not supported by WebGL - case COMPRESSED_DXT5_RGBA: if (texCompDXTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, mipmapCount); break; // NOTE: Not supported by WebGL - case COMPRESSED_ETC1_RGB: if (texCompETC1Supported) LoadTextureCompressed((unsigned char *)data, width, height, GL_ETC1_RGB8_OES, mipmapCount); break; // NOTE: Requires OpenGL ES 2.0 or OpenGL 4.3 - case COMPRESSED_ETC2_RGB: if (texCompETC2Supported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGB8_ETC2, mipmapCount); break; // NOTE: Requires OpenGL ES 3.0 or OpenGL 4.3 - case COMPRESSED_ETC2_EAC_RGBA: if (texCompETC2Supported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA8_ETC2_EAC, mipmapCount); break; // NOTE: Requires OpenGL ES 3.0 or OpenGL 4.3 - case COMPRESSED_PVRT_RGB: if (texCompPVRTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG, mipmapCount); break; // NOTE: Requires PowerVR GPU - case COMPRESSED_PVRT_RGBA: if (texCompPVRTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG, mipmapCount); break; // NOTE: Requires PowerVR GPU - case COMPRESSED_ASTC_4x4_RGBA: if (texCompASTCSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_ASTC_4x4_KHR, mipmapCount); break; // NOTE: Requires OpenGL ES 3.1 or OpenGL 4.3 - case COMPRESSED_ASTC_8x8_RGBA: if (texCompASTCSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_ASTC_8x8_KHR, mipmapCount); break; // NOTE: Requires OpenGL ES 3.1 or OpenGL 4.3 -#endif - default: TraceLog(LOG_WARNING, "Texture format not supported"); break; - } #endif // Texture parameters configuration @@ -1575,10 +1590,10 @@ RenderTexture2D rlLoadRenderTexture(int width, int height) glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL); glBindTexture(GL_TEXTURE_2D, 0); -#if defined(GRAPHICS_API_OPENGL_33) - #define USE_DEPTH_TEXTURE -#else +#if defined(GRAPHICS_API_OPENGL_21) || defined(GRAPHICS_API_OPENGL_ES2) #define USE_DEPTH_RENDERBUFFER +#else + #define USE_DEPTH_TEXTURE #endif #if defined(USE_DEPTH_RENDERBUFFER) @@ -1937,17 +1952,17 @@ void rlDrawMesh(Mesh mesh, Material material, Matrix transform) // Upload to shader material.colDiffuse if (material.shader.locs[LOC_COLOR_DIFFUSE] != -1) - glUniform4f(material.shader.locs[LOC_COLOR_DIFFUSE], (float)material.maps[MAP_DIFFUSE].color.r/255, - (float)material.maps[MAP_DIFFUSE].color.g/255, - (float)material.maps[MAP_DIFFUSE].color.b/255, - (float)material.maps[MAP_DIFFUSE].color.a/255); + glUniform4f(material.shader.locs[LOC_COLOR_DIFFUSE], (float)material.maps[MAP_DIFFUSE].color.r/255.0f, + (float)material.maps[MAP_DIFFUSE].color.g/255.0f, + (float)material.maps[MAP_DIFFUSE].color.b/255.0f, + (float)material.maps[MAP_DIFFUSE].color.a/255.0f); // Upload to shader material.colSpecular (if available) if (material.shader.locs[LOC_COLOR_SPECULAR] != -1) - glUniform4f(material.shader.locs[LOC_COLOR_SPECULAR], (float)material.maps[MAP_SPECULAR].color.r/255, - (float)material.maps[MAP_SPECULAR].color.g/255, - (float)material.maps[MAP_SPECULAR].color.b/255, - (float)material.maps[MAP_SPECULAR].color.a/255); + glUniform4f(material.shader.locs[LOC_COLOR_SPECULAR], (float)material.maps[MAP_SPECULAR].color.r/255.0f, + (float)material.maps[MAP_SPECULAR].color.g/255.0f, + (float)material.maps[MAP_SPECULAR].color.b/255.0f, + (float)material.maps[MAP_SPECULAR].color.a/255.0f); if (material.shader.locs[LOC_MATRIX_VIEW] != -1) SetShaderValueMatrix(material.shader, material.shader.locs[LOC_MATRIX_VIEW], modelview); if (material.shader.locs[LOC_MATRIX_PROJECTION] != -1) SetShaderValueMatrix(material.shader, material.shader.locs[LOC_MATRIX_PROJECTION], projection); @@ -2202,7 +2217,7 @@ void *rlReadTexturePixels(Texture2D texture) glBindFramebuffer(GL_FRAMEBUFFER, fbo.id); glBindTexture(GL_TEXTURE_2D, 0); - // Attach our texture to FBO -> Texture must be RGB + // Attach our texture to FBO -> Texture must be RGBA // NOTE: Previoust attached texture is automatically detached glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture.id, 0); @@ -2222,32 +2237,30 @@ void *rlReadTexturePixels(Texture2D texture) glClearColor(0.0f, 0.0f, 0.0f, 0.0f); glClearDepthf(1.0f); - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - glViewport(0, 0, width, height); - //glMatrixMode(GL_PROJECTION); - //glLoadIdentity(); - rlOrtho(0.0, width, height, 0.0, 0.0, 1.0); - //glMatrixMode(GL_MODELVIEW); - //glLoadIdentity(); //glDisable(GL_TEXTURE_2D); - //glDisable(GL_BLEND); glEnable(GL_DEPTH_TEST); + //glDisable(GL_BLEND); + + glViewport(0, 0, texture.width, texture.height); + rlOrtho(0.0, texture.width, texture.height, 0.0, 0.0, 1.0); - Model quad; - //quad.mesh = GenMeshQuad(width, height); - quad.transform = MatrixIdentity(); - quad.shader = defaultShader; - - DrawModel(quad, (Vector3){ 0.0f, 0.0f, 0.0f }, 1.0f, WHITE); - - pixels = (unsigned char *)malloc(texture.width*texture.height*3*sizeof(unsigned char)); + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + glUseProgram(GetShaderDefault().id); + glBindTexture(GL_TEXTURE_2D, texture.id); + GenDrawQuad(); + glBindTexture(GL_TEXTURE_2D, 0); + glUseProgram(0); + + pixels = (unsigned char *)malloc(texture.width*texture.height*4*sizeof(unsigned char)); - glReadPixels(0, 0, texture.width, texture.height, GL_RGB, GL_UNSIGNED_BYTE, pixels); + glReadPixels(0, 0, texture.width, texture.height, GL_RGBA, GL_UNSIGNED_BYTE, pixels); // Bind framebuffer 0, which means render to back buffer glBindFramebuffer(GL_FRAMEBUFFER, 0); - - UnloadModel(quad); + + // Reset viewport dimensions to default + glViewport(0, 0, screenWidth, screenHeight); + #endif // GET_TEXTURE_FBO_OPTION // Clean up temporal fbo @@ -2342,33 +2355,47 @@ char *LoadText(const char *fileName) } // Load shader from files and bind default locations +// NOTE: If shader string is NULL, using default vertex/fragment shaders Shader LoadShader(char *vsFileName, char *fsFileName) { Shader shader = { 0 }; + + // NOTE: All locations must be reseted to -1 (no location) + for (int i = 0; i < MAX_SHADER_LOCATIONS; i++) shader.locs[i] = -1; #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - // Shaders loading from external text file - char *vShaderStr = LoadText(vsFileName); - char *fShaderStr = LoadText(fsFileName); - if ((vShaderStr != NULL) && (fShaderStr != NULL)) - { - shader.id = LoadShaderProgram(vShaderStr, fShaderStr); - - // After shader loading, we TRY to set default location names - if (shader.id > 0) SetShaderDefaultLocations(&shader); + unsigned int vertexShaderId, fragmentShaderId; - // Shader strings must be freed + if (vsFileName == NULL) vertexShaderId = defaultVShaderId; + else + { + char *vShaderStr = LoadText(vsFileName); + vertexShaderId = CompileShader(vShaderStr, GL_VERTEX_SHADER); free(vShaderStr); + } + + if (fsFileName == NULL) fragmentShaderId = defaultVShaderId; + else + { + char* fShaderStr = LoadText(fsFileName); + fragmentShaderId = CompileShader(fShaderStr, GL_FRAGMENT_SHADER); free(fShaderStr); } + shader.id = LoadShaderProgram(vertexShaderId, fragmentShaderId); + + if (vertexShaderId != defaultVShaderId) glDeleteShader(vertexShaderId); + if (fragmentShaderId != defaultFShaderId) glDeleteShader(fragmentShaderId); + if (shader.id == 0) { TraceLog(LOG_WARNING, "Custom shader could not be loaded"); shader = defaultShader; } + // After shader loading, we TRY to set default location names + if (shader.id > 0) SetShaderDefaultLocations(&shader); // Get available shader uniforms // NOTE: This information is useful for debug... @@ -2393,7 +2420,6 @@ Shader LoadShader(char *vsFileName, char *fsFileName) TraceLog(LOG_DEBUG, "[SHDR ID %i] Active uniform [%s] set at location: %i", shader.id, name, location); } - #endif return shader; @@ -2443,7 +2469,7 @@ int GetShaderLocation(Shader shader, const char *uniformName) } // Set shader uniform value (float) -void SetShaderValue(Shader shader, int uniformLoc, float *value, int size) +void SetShaderValue(Shader shader, int uniformLoc, const float *value, int size) { #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) glUseProgram(shader.id); @@ -2459,7 +2485,7 @@ void SetShaderValue(Shader shader, int uniformLoc, float *value, int size) } // Set shader uniform value (int) -void SetShaderValuei(Shader shader, int uniformLoc, int *value, int size) +void SetShaderValuei(Shader shader, int uniformLoc, const int *value, int size) { #if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) glUseProgram(shader.id); @@ -2900,11 +2926,15 @@ void InitVrSimulator(VrDeviceInfo info) vrConfig.stereoFbo = rlLoadRenderTexture(screenWidth, screenHeight); #if defined(SUPPORT_DISTORTION_SHADER) - // Load distortion shader (initialized by default with Oculus Rift CV1 parameters) - vrConfig.distortionShader.id = LoadShaderProgram(vDistortionShaderStr, fDistortionShaderStr); + // Load distortion shader + unsigned int vertexShaderId = CompileShader(distortionVShaderStr, GL_VERTEX_SHADER); + unsigned int fragmentShaderId = CompileShader(distortionFShaderStr, GL_FRAGMENT_SHADER); + + vrConfig.distortionShader.id = LoadShaderProgram(vertexShaderId, fragmentShaderId); if (vrConfig.distortionShader.id > 0) SetShaderDefaultLocations(&vrConfig.distortionShader); #endif + // Set VR configutarion parameters, including distortion shader SetStereoConfig(info); vrSimulatorReady = true; @@ -2929,18 +2959,6 @@ void CloseVrSimulator(void) #endif } -// TODO: Review VR system to be more flexible, -// move distortion shader to user side, -// SetStereoConfig() must be reviewed... -/* -// Set VR view distortion shader -void SetVrDistortionShader(Shader shader) -{ - vrConfig.distortionShader = shader; - SetStereoConfig(info); -} -*/ - // Detect if VR simulator is running bool IsVrSimulatorReady(void) { @@ -2951,6 +2969,15 @@ bool IsVrSimulatorReady(void) #endif } +// Set VR distortion shader for stereoscopic rendering +// TODO: Review VR system to be more flexible, move distortion shader to user side +void SetVrDistortionShader(Shader shader) +{ + vrConfig.distortionShader = shader; + + //SetStereoConfig(info); // TODO: Must be reviewed to set new distortion shader uniform values... +} + // Enable/Disable VR experience (device or simulator) void ToggleVrMode(void) { @@ -3115,45 +3142,29 @@ static void LoadTextureCompressed(unsigned char *data, int width, int height, in } } -// Load custom shader strings and return program id -static unsigned int LoadShaderProgram(const char *vShaderStr, const char *fShaderStr) +// Compile custom shader and return shader id +static unsigned int CompileShader(const char *shaderStr, int type) { - unsigned int program = 0; - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - GLuint vertexShader; - GLuint fragmentShader; - - vertexShader = glCreateShader(GL_VERTEX_SHADER); - fragmentShader = glCreateShader(GL_FRAGMENT_SHADER); - - const char *pvs = vShaderStr; - const char *pfs = fShaderStr; - - glShaderSource(vertexShader, 1, &pvs, NULL); - glShaderSource(fragmentShader, 1, &pfs, NULL); + unsigned int shader = glCreateShader(type); + glShaderSource(shader, 1, &shaderStr, NULL); GLint success = 0; - - glCompileShader(vertexShader); - - glGetShaderiv(vertexShader, GL_COMPILE_STATUS, &success); + glCompileShader(shader); + glGetShaderiv(shader, GL_COMPILE_STATUS, &success); if (success != GL_TRUE) { - TraceLog(LOG_WARNING, "[VSHDR ID %i] Failed to compile vertex shader...", vertexShader); - + TraceLog(LOG_WARNING, "[SHDR ID %i] Failed to compile shader...", shader); int maxLength = 0; int length; - - glGetShaderiv(vertexShader, GL_INFO_LOG_LENGTH, &maxLength); + glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &maxLength); #ifdef _MSC_VER char *log = malloc(maxLength); #else char log[maxLength]; #endif - glGetShaderInfoLog(vertexShader, maxLength, &length, log); + glGetShaderInfoLog(shader, maxLength, &length, log); TraceLog(LOG_INFO, "%s", log); @@ -3161,40 +3172,23 @@ static unsigned int LoadShaderProgram(const char *vShaderStr, const char *fShade free(log); #endif } - else TraceLog(LOG_INFO, "[VSHDR ID %i] Vertex shader compiled successfully", vertexShader); - - glCompileShader(fragmentShader); - - glGetShaderiv(fragmentShader, GL_COMPILE_STATUS, &success); - - if (success != GL_TRUE) - { - TraceLog(LOG_WARNING, "[FSHDR ID %i] Failed to compile fragment shader...", fragmentShader); - - int maxLength = 0; - int length; - - glGetShaderiv(fragmentShader, GL_INFO_LOG_LENGTH, &maxLength); + else TraceLog(LOG_INFO, "[SHDR ID %i] Shader compiled successfully", shader); -#ifdef _MSC_VER - char *log = malloc(maxLength); -#else - char log[maxLength]; -#endif - glGetShaderInfoLog(fragmentShader, maxLength, &length, log); + return shader; +} - TraceLog(LOG_INFO, "%s", log); +// Load custom shader strings and return program id +static unsigned int LoadShaderProgram(unsigned int vShaderId, unsigned int fShaderId) +{ + unsigned int program = 0; -#ifdef _MSC_VER - free(log); -#endif - } - else TraceLog(LOG_INFO, "[FSHDR ID %i] Fragment shader compiled successfully", fragmentShader); +#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) + GLint success = 0; program = glCreateProgram(); - glAttachShader(program, vertexShader); - glAttachShader(program, fragmentShader); + glAttachShader(program, vShaderId); + glAttachShader(program, fShaderId); // NOTE: Default attribute shader locations must be binded before linking glBindAttribLocation(program, 0, DEFAULT_ATTRIB_POSITION_NAME); @@ -3238,9 +3232,6 @@ static unsigned int LoadShaderProgram(const char *vShaderStr, const char *fShade program = 0; } else TraceLog(LOG_INFO, "[SHDR ID %i] Shader program loaded successfully", program); - - glDeleteShader(vertexShader); - glDeleteShader(fragmentShader); #endif return program; } @@ -3250,10 +3241,13 @@ static unsigned int LoadShaderProgram(const char *vShaderStr, const char *fShade // NOTE: This shader program is used for batch buffers (lines, triangles, quads) static Shader LoadShaderDefault(void) { - Shader shader; + Shader shader = { 0 }; + + // NOTE: All locations must be reseted to -1 (no location) + for (int i = 0; i < MAX_SHADER_LOCATIONS; i++) shader.locs[i] = -1; // Vertex shader directly defined, no external file required - char vDefaultShaderStr[] = + char defaultVShaderStr[] = #if defined(GRAPHICS_API_OPENGL_21) "#version 120 \n" #elif defined(GRAPHICS_API_OPENGL_ES2) @@ -3282,7 +3276,7 @@ static Shader LoadShaderDefault(void) "} \n"; // Fragment shader directly defined, no external file required - char fDefaultShaderStr[] = + char defaultFShaderStr[] = #if defined(GRAPHICS_API_OPENGL_21) "#version 120 \n" #elif defined(GRAPHICS_API_OPENGL_ES2) @@ -3311,22 +3305,29 @@ static Shader LoadShaderDefault(void) #endif "} \n"; - shader.id = LoadShaderProgram(vDefaultShaderStr, fDefaultShaderStr); + // NOTE: Compiled vertex/fragment shaders are kept for re-use + defaultVShaderId = CompileShader(defaultVShaderStr, GL_VERTEX_SHADER); // Compile default vertex shader + defaultFShaderId = CompileShader(defaultFShaderStr, GL_FRAGMENT_SHADER); // Compile default fragment shader + + shader.id = LoadShaderProgram(defaultVShaderId, defaultFShaderId); if (shader.id > 0) { TraceLog(LOG_INFO, "[SHDR ID %i] Default shader loaded successfully", shader.id); - - // Set default shader locations - // Get handles to GLSL input attibute locations + + // Set default shader locations: attributes locations shader.locs[LOC_VERTEX_POSITION] = glGetAttribLocation(shader.id, "vertexPosition"); shader.locs[LOC_VERTEX_TEXCOORD01] = glGetAttribLocation(shader.id, "vertexTexCoord"); shader.locs[LOC_VERTEX_COLOR] = glGetAttribLocation(shader.id, "vertexColor"); - // Get handles to GLSL uniform locations + // Set default shader locations: uniform locations shader.locs[LOC_MATRIX_MVP] = glGetUniformLocation(shader.id, "mvp"); shader.locs[LOC_COLOR_DIFFUSE] = glGetUniformLocation(shader.id, "colDiffuse"); shader.locs[LOC_MAP_DIFFUSE] = glGetUniformLocation(shader.id, "texture0"); + + // NOTE: We could also use below function but in case DEFAULT_ATTRIB_* points are + // changed for external custom shaders, we just use direct bindings above + //SetShaderDefaultLocations(&shader); } else TraceLog(LOG_WARNING, "[SHDR ID %i] Default shader could not be loaded", shader.id); @@ -3370,10 +3371,10 @@ static void UnloadShaderDefault(void) { glUseProgram(0); - //glDetachShader(defaultShader, vertexShader); - //glDetachShader(defaultShader, fragmentShader); - //glDeleteShader(vertexShader); // Already deleted on shader compilation - //glDeleteShader(fragmentShader); // Already deleted on shader compilation + glDetachShader(defaultShader.id, defaultVShaderId); + glDetachShader(defaultShader.id, defaultFShaderId); + glDeleteShader(defaultVShaderId); + glDeleteShader(defaultFShaderId); glDeleteProgram(defaultShader.id); } @@ -4023,8 +4024,8 @@ static void SetStereoConfig(VrDeviceInfo hmd) vrConfig.eyesViewOffset[1] = MatrixTranslate(hmd.interpupillaryDistance*0.5f, 0.075f, 0.045f); // Compute eyes Viewports - //vrConfig.eyesViewport[0] = (Rectangle){ 0, 0, hmd.hResolution/2, hmd.vResolution }; - //vrConfig.eyesViewport[1] = (Rectangle){ hmd.hResolution/2, 0, hmd.hResolution/2, hmd.vResolution }; + vrConfig.eyesViewport[0] = (Rectangle){ 0, 0, hmd.hResolution/2, hmd.vResolution }; + vrConfig.eyesViewport[1] = (Rectangle){ hmd.hResolution/2, 0, hmd.hResolution/2, hmd.vResolution }; } // Set internal projection and modelview matrix depending on eyes tracking data |