Support 16-Bit HDR textures (#3220)
* Support 16-Bit HDR textures * Fix build on emscripten * Move helper functions
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Nikolas
GitHub
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dc621ca388
3 changed files with 238 additions and 12 deletions
39
src/rlgl.h
39
src/rlgl.h
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@ -419,6 +419,9 @@ typedef enum {
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RL_PIXELFORMAT_UNCOMPRESSED_R32, // 32 bpp (1 channel - float)
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RL_PIXELFORMAT_UNCOMPRESSED_R32G32B32, // 32*3 bpp (3 channels - float)
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RL_PIXELFORMAT_UNCOMPRESSED_R32G32B32A32, // 32*4 bpp (4 channels - float)
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RL_PIXELFORMAT_UNCOMPRESSED_R16, // 16 bpp (1 channel - half float)
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RL_PIXELFORMAT_UNCOMPRESSED_R16G16B16, // 16*3 bpp (3 channels - half float)
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RL_PIXELFORMAT_UNCOMPRESSED_R16G16B16A16, // 16*4 bpp (4 channels - half float)
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RL_PIXELFORMAT_COMPRESSED_DXT1_RGB, // 4 bpp (no alpha)
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RL_PIXELFORMAT_COMPRESSED_DXT1_RGBA, // 4 bpp (1 bit alpha)
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RL_PIXELFORMAT_COMPRESSED_DXT3_RGBA, // 8 bpp
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@ -1006,6 +1009,7 @@ typedef struct rlglData {
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bool texDepth; // Depth textures supported (GL_ARB_depth_texture, GL_OES_depth_texture)
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bool texDepthWebGL; // Depth textures supported WebGL specific (GL_WEBGL_depth_texture)
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bool texFloat32; // float textures support (32 bit per channel) (GL_OES_texture_float)
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bool texFloat16; // half float textures support (16 bit per channel) (GL_OES_texture_half_float)
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bool texCompDXT; // DDS texture compression support (GL_EXT_texture_compression_s3tc, GL_WEBGL_compressed_texture_s3tc, GL_WEBKIT_WEBGL_compressed_texture_s3tc)
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bool texCompETC1; // ETC1 texture compression support (GL_OES_compressed_ETC1_RGB8_texture, GL_WEBGL_compressed_texture_etc1)
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bool texCompETC2; // ETC2/EAC texture compression support (GL_ARB_ES3_compatibility)
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@ -2189,6 +2193,7 @@ void rlLoadExtensions(void *loader)
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RLGL.ExtSupported.instancing = (GLAD_GL_EXT_draw_instanced && GLAD_GL_ARB_instanced_arrays);
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RLGL.ExtSupported.texNPOT = GLAD_GL_ARB_texture_non_power_of_two;
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RLGL.ExtSupported.texFloat32 = GLAD_GL_ARB_texture_float;
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RLGL.ExtSupported.texFloat16 = GLAD_GL_ARB_texture_float;
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RLGL.ExtSupported.texDepth = GLAD_GL_ARB_depth_texture;
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RLGL.ExtSupported.maxDepthBits = 32;
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RLGL.ExtSupported.texAnisoFilter = GLAD_GL_EXT_texture_filter_anisotropic;
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@ -2200,6 +2205,7 @@ void rlLoadExtensions(void *loader)
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RLGL.ExtSupported.instancing = true;
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RLGL.ExtSupported.texNPOT = true;
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RLGL.ExtSupported.texFloat32 = true;
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RLGL.ExtSupported.texFloat16 = true;
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RLGL.ExtSupported.texDepth = true;
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RLGL.ExtSupported.maxDepthBits = 32;
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RLGL.ExtSupported.texAnisoFilter = true;
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@ -2224,6 +2230,7 @@ void rlLoadExtensions(void *loader)
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RLGL.ExtSupported.instancing = true;
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RLGL.ExtSupported.texNPOT = true;
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RLGL.ExtSupported.texFloat32 = true;
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RLGL.ExtSupported.texFloat16 = true;
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RLGL.ExtSupported.texDepth = true;
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RLGL.ExtSupported.texDepthWebGL = true;
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RLGL.ExtSupported.maxDepthBits = 24;
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@ -2320,6 +2327,7 @@ void rlLoadExtensions(void *loader)
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// Check texture float support
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if (strcmp(extList[i], (const char *)"GL_OES_texture_float") == 0) RLGL.ExtSupported.texFloat32 = true;
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if (strcmp(extList[i], (const char *)"GL_OES_texture_half_float") == 0) RLGL.ExtSupported.texFloat16 = true;
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// Check depth texture support
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if (strcmp(extList[i], (const char *)"GL_OES_depth_texture") == 0) RLGL.ExtSupported.texDepth = true;
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@ -3163,13 +3171,9 @@ unsigned int rlLoadTextureCubemap(const void *data, int size, int format)
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{
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if (format < RL_PIXELFORMAT_COMPRESSED_DXT1_RGB)
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{
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if (format == RL_PIXELFORMAT_UNCOMPRESSED_R32G32B32)
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{
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// Instead of using a sized internal texture format (GL_RGB16F, GL_RGB32F), we let the driver to choose the better format for us (GL_RGB)
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if (RLGL.ExtSupported.texFloat32) glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_RGB, size, size, 0, GL_RGB, GL_FLOAT, NULL);
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else TRACELOG(RL_LOG_WARNING, "TEXTURES: Cubemap requested format not supported");
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}
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else if ((format == RL_PIXELFORMAT_UNCOMPRESSED_R32) || (format == RL_PIXELFORMAT_UNCOMPRESSED_R32G32B32A32)) TRACELOG(RL_LOG_WARNING, "TEXTURES: Cubemap requested format not supported");
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if ((format == RL_PIXELFORMAT_UNCOMPRESSED_R32) || (format == RL_PIXELFORMAT_UNCOMPRESSED_R32G32B32A32)
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|| (format == RL_PIXELFORMAT_UNCOMPRESSED_R16) || (format == RL_PIXELFORMAT_UNCOMPRESSED_R16G16B16A16))
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TRACELOG(RL_LOG_WARNING, "TEXTURES: Cubemap requested format not supported");
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else glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glInternalFormat, size, size, 0, glFormat, glType, NULL);
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}
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else TRACELOG(RL_LOG_WARNING, "TEXTURES: Empty cubemap creation does not support compressed format");
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@ -3256,10 +3260,16 @@ void rlGetGlTextureFormats(int format, unsigned int *glInternalFormat, unsigned
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case RL_PIXELFORMAT_UNCOMPRESSED_R32: if (RLGL.ExtSupported.texFloat32) *glInternalFormat = GL_R32F_EXT; *glFormat = GL_RED_EXT; *glType = GL_FLOAT; break;
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case RL_PIXELFORMAT_UNCOMPRESSED_R32G32B32: if (RLGL.ExtSupported.texFloat32) *glInternalFormat = GL_RGB32F_EXT; *glFormat = GL_RGB; *glType = GL_FLOAT; break;
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case RL_PIXELFORMAT_UNCOMPRESSED_R32G32B32A32: if (RLGL.ExtSupported.texFloat32) *glInternalFormat = GL_RGBA32F_EXT; *glFormat = GL_RGBA; *glType = GL_FLOAT; break;
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case RL_PIXELFORMAT_UNCOMPRESSED_R16: if (RLGL.ExtSupported.texFloat16) *glInternalFormat = GL_R16F_EXT; *glFormat = GL_RED_EXT; *glType = GL_HALF_FLOAT; break;
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case RL_PIXELFORMAT_UNCOMPRESSED_R16G16B16: if (RLGL.ExtSupported.texFloat16) *glInternalFormat = GL_RGB16F_EXT; *glFormat = GL_RGB; *glType = GL_HALF_FLOAT; break;
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case RL_PIXELFORMAT_UNCOMPRESSED_R16G16B16A16: if (RLGL.ExtSupported.texFloat16) *glInternalFormat = GL_RGBA16F_EXT; *glFormat = GL_RGBA; *glType = GL_HALF_FLOAT; break;
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#else
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case RL_PIXELFORMAT_UNCOMPRESSED_R32: if (RLGL.ExtSupported.texFloat32) *glInternalFormat = GL_LUMINANCE; *glFormat = GL_LUMINANCE; *glType = GL_FLOAT; break; // NOTE: Requires extension OES_texture_float
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case RL_PIXELFORMAT_UNCOMPRESSED_R32G32B32: if (RLGL.ExtSupported.texFloat32) *glInternalFormat = GL_RGB; *glFormat = GL_RGB; *glType = GL_FLOAT; break; // NOTE: Requires extension OES_texture_float
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case RL_PIXELFORMAT_UNCOMPRESSED_R32G32B32A32: if (RLGL.ExtSupported.texFloat32) *glInternalFormat = GL_RGBA; *glFormat = GL_RGBA; *glType = GL_FLOAT; break; // NOTE: Requires extension OES_texture_float
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case RL_PIXELFORMAT_UNCOMPRESSED_R32: if (RLGL.ExtSupported.texFloat32) *glInternalFormat = GL_LUMINANCE; *glFormat = GL_LUMINANCE; *glType = GL_FLOAT; break; // NOTE: Requires extension OES_texture_float
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case RL_PIXELFORMAT_UNCOMPRESSED_R32G32B32: if (RLGL.ExtSupported.texFloat32) *glInternalFormat = GL_RGB; *glFormat = GL_RGB; *glType = GL_FLOAT; break; // NOTE: Requires extension OES_texture_float
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case RL_PIXELFORMAT_UNCOMPRESSED_R32G32B32A32: if (RLGL.ExtSupported.texFloat32) *glInternalFormat = GL_RGBA; *glFormat = GL_RGBA; *glType = GL_FLOAT; break; // NOTE: Requires extension OES_texture_float
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case RL_PIXELFORMAT_UNCOMPRESSED_R16: if (RLGL.ExtSupported.texFloat16) *glInternalFormat = GL_LUMINANCE; *glFormat = GL_LUMINANCE; *glType = GL_HALF_FLOAT_OES; break; // NOTE: Requires extension OES_texture_half_float
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case RL_PIXELFORMAT_UNCOMPRESSED_R16G16B16: if (RLGL.ExtSupported.texFloat16) *glInternalFormat = GL_RGB; *glFormat = GL_RGB; *glType = GL_HALF_FLOAT_OES; break; // NOTE: Requires extension OES_texture_half_float
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case RL_PIXELFORMAT_UNCOMPRESSED_R16G16B16A16: if (RLGL.ExtSupported.texFloat16) *glInternalFormat = GL_RGBA; *glFormat = GL_RGBA; *glType = GL_HALF_FLOAT_OES; break; // NOTE: Requires extension OES_texture_half_float
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#endif
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#endif
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#elif defined(GRAPHICS_API_OPENGL_33)
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@ -3273,6 +3283,9 @@ void rlGetGlTextureFormats(int format, unsigned int *glInternalFormat, unsigned
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case RL_PIXELFORMAT_UNCOMPRESSED_R32: if (RLGL.ExtSupported.texFloat32) *glInternalFormat = GL_R32F; *glFormat = GL_RED; *glType = GL_FLOAT; break;
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case RL_PIXELFORMAT_UNCOMPRESSED_R32G32B32: if (RLGL.ExtSupported.texFloat32) *glInternalFormat = GL_RGB32F; *glFormat = GL_RGB; *glType = GL_FLOAT; break;
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case RL_PIXELFORMAT_UNCOMPRESSED_R32G32B32A32: if (RLGL.ExtSupported.texFloat32) *glInternalFormat = GL_RGBA32F; *glFormat = GL_RGBA; *glType = GL_FLOAT; break;
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case RL_PIXELFORMAT_UNCOMPRESSED_R16: if (RLGL.ExtSupported.texFloat16) *glInternalFormat = GL_R16F; *glFormat = GL_RED; *glType = GL_HALF_FLOAT; break;
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case RL_PIXELFORMAT_UNCOMPRESSED_R16G16B16: if (RLGL.ExtSupported.texFloat16) *glInternalFormat = GL_RGB16F; *glFormat = GL_RGB; *glType = GL_HALF_FLOAT; break;
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case RL_PIXELFORMAT_UNCOMPRESSED_R16G16B16A16: if (RLGL.ExtSupported.texFloat16) *glInternalFormat = GL_RGBA16F; *glFormat = GL_RGBA; *glType = GL_HALF_FLOAT; break;
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#endif
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#if !defined(GRAPHICS_API_OPENGL_11)
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case RL_PIXELFORMAT_COMPRESSED_DXT1_RGB: if (RLGL.ExtSupported.texCompDXT) *glInternalFormat = GL_COMPRESSED_RGB_S3TC_DXT1_EXT; break;
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@ -4480,6 +4493,9 @@ const char *rlGetPixelFormatName(unsigned int format)
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case RL_PIXELFORMAT_UNCOMPRESSED_R32: return "R32"; break; // 32 bpp (1 channel - float)
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case RL_PIXELFORMAT_UNCOMPRESSED_R32G32B32: return "R32G32B32"; break; // 32*3 bpp (3 channels - float)
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case RL_PIXELFORMAT_UNCOMPRESSED_R32G32B32A32: return "R32G32B32A32"; break; // 32*4 bpp (4 channels - float)
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case RL_PIXELFORMAT_UNCOMPRESSED_R16: return "R16"; break; // 16 bpp (1 channel - half float)
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case RL_PIXELFORMAT_UNCOMPRESSED_R16G16B16: return "R16G16B16"; break; // 16*3 bpp (3 channels - half float)
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case RL_PIXELFORMAT_UNCOMPRESSED_R16G16B16A16: return "R16G16B16A16"; break; // 16*4 bpp (4 channels - half float)
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case RL_PIXELFORMAT_COMPRESSED_DXT1_RGB: return "DXT1_RGB"; break; // 4 bpp (no alpha)
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case RL_PIXELFORMAT_COMPRESSED_DXT1_RGBA: return "DXT1_RGBA"; break; // 4 bpp (1 bit alpha)
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case RL_PIXELFORMAT_COMPRESSED_DXT3_RGBA: return "DXT3_RGBA"; break; // 8 bpp
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@ -4721,6 +4737,9 @@ static int rlGetPixelDataSize(int width, int height, int format)
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case RL_PIXELFORMAT_UNCOMPRESSED_R32: bpp = 32; break;
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case RL_PIXELFORMAT_UNCOMPRESSED_R32G32B32: bpp = 32*3; break;
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case RL_PIXELFORMAT_UNCOMPRESSED_R32G32B32A32: bpp = 32*4; break;
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case RL_PIXELFORMAT_UNCOMPRESSED_R16: bpp = 16; break;
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case RL_PIXELFORMAT_UNCOMPRESSED_R16G16B16: bpp = 16*3; break;
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case RL_PIXELFORMAT_UNCOMPRESSED_R16G16B16A16: bpp = 16*4; break;
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case RL_PIXELFORMAT_COMPRESSED_DXT1_RGB:
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case RL_PIXELFORMAT_COMPRESSED_DXT1_RGBA:
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case RL_PIXELFORMAT_COMPRESSED_ETC1_RGB:
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