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improved blending support

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This commit is contained in:
Chris 2021-11-18 10:47:43 -08:00
parent 7755cd0019
commit 6df4e92df4
1 changed files with 67 additions and 1 deletions
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68
src/rlgl.h
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@ -279,6 +279,32 @@
#define RL_VERTEX_SHADER 0x8B31 // GL_VERTEX_SHADER
#define RL_COMPUTE_SHADER 0x91B9 // GL_COMPUTE_SHADER
// Blend Factors and Equations
#define RL_BLEND_MIN 0x8007 // GL_MIN
#define RL_BLEND_MAX 0x8008 // GL_MAX
#define RL_BLEND_ADD 0x8006 // GL_FUNC_ADD
#define RL_BLEND_SUBTRACT 0x800A // GL_FUNC_SUBTRACT
#define RL_BLEND_REVERSE_SUBTRACT 0x800B // GL_FUNC_REVERSE_SUBTRACT
#define RL_BLEND_ZERO 0 // GL_ZERO
#define RL_BLEND_ONE 1 // GL_ONE
#define RL_BLEND_SRC_COLOR 0x0300 // GL_SRC_COLOR
#define RL_BLEND_DST_COLOR 0x0306 // GL_DST_COLOR
#define RL_BLEND_ONE_MINUS_SRC_COLOR 0x0301 // GL_ONE_MINUS_SRC_COLOR
#define RL_BLEND_ONE_MINUS_DST_COLOR 0x0307 // GL_ONE_MINUS_DST_COLOR
#define RL_BLEND_SRC_ALPHA 0x0302 // GL_SRC_ALPHA
#define RL_BLEND_DST_ALPHA 0x0304 // GL_DST_ALPHA
#define RL_BLEND_ONE_MINUS_SRC_ALPHA 0x0303 // GL_ONE_MINUS_SRC_ALPHA
#define RL_BLEND_ONE_MINUS_DST_ALPHA 0x0305 // GL_ONE_MINUS_DST_ALPHA
#define RL_BLEND_CONSTANT_COLOR 0x8001 // GL_CONSTANT_COLOR
#define RL_BLEND_CONSTANT_ALPHA 0x8003 // GL_CONSTANT_ALPHA
#define RL_BLEND_ONE_MINUS_CONSTANT_COLOR 0x8002 // GL_ONE_MINUS_CONSTANT_COLOR
#define RL_BLEND_ONE_MINUS_CONSTANT_ALPHA 0x8004 // GL_ONE_MINUS_CONSTANT_ALPHA
#define RL_BLEND_SRC_ALPHA_SATURATE 0x0308 // GL_SRC_ALPHA_SATURATE
#define RL_BLEND_SRC1_COLOR 0x88F9 // GL_SRC1_COLOR
#define RL_BLEND_SRC1_ALPHA 0x8589 // GL_SRC1_ALPHA
#define RL_BLEND_ONE_MINUS_SRC1_COLOR 0x88FA // GL_ONE_MINUS_SRC1_COLOR
#define RL_BLEND_ONE_MINUS_SRC1_ALPHA 0x88FB // GL_ONE_MINUS_SRC1_ALPHA
//----------------------------------------------------------------------------------
// Types and Structures Definition
//----------------------------------------------------------------------------------
@ -433,7 +459,8 @@ typedef enum {
RL_BLEND_MULTIPLIED, // Blend textures multiplying colors
RL_BLEND_ADD_COLORS, // Blend textures adding colors (alternative)
RL_BLEND_SUBTRACT_COLORS, // Blend textures subtracting colors (alternative)
RL_BLEND_CUSTOM // Belnd textures using custom src/dst factors (use SetBlendModeCustom())
RL_BLEND_CUSTOM, // Blend textures using custom src/dst factors (use SetBlendModeCustom())
RL_BLEND_CUSTOM_SEPARATED // Blend textures using custom src/dst factors for both colors and alpha
} rlBlendMode;
// Shader location point type
@ -586,8 +613,11 @@ RLAPI bool rlIsStereoRenderEnabled(void); // Check if stereo rende
RLAPI void rlClearColor(unsigned char r, unsigned char g, unsigned char b, unsigned char a); // Clear color buffer with color
RLAPI void rlClearScreenBuffers(void); // Clear used screen buffers (color and depth)
RLAPI void rlCheckErrors(void); // Check and log OpenGL error codes
RLAPI void rlSetBlendMode(int mode); // Set blending mode
RLAPI void rlSetBlendFactors(int glSrcFactor, int glDstFactor, int glEquation); // Set blending mode factor and equation (using OpenGL factors)
RLAPI void rlSetBlendColorFactors(int glSrcFactor, int glDstFactor, int glEquation); // Set blending mode factor and equation for colors
RLAPI void rlSetBlendAlphaFactors(int glSrcFactor, int glDstFactor, int glEquation); // Set blending mode factor and equation for alpha
//------------------------------------------------------------------------------------
// Functions Declaration - rlgl functionality
@ -924,6 +954,12 @@ typedef struct rlglData {
int glBlendSrcFactor; // Blending source factor
int glBlendDstFactor; // Blending destination factor
int glBlendEquation; // Blending equation
int glBlendSrcFactorColor; // Blending source factor, for colors
int glBlendDstFactorColor; // Blending destination factor, for colors
int glBlendEquationColor; // Blending equation, for colors
int glBlendSrcFactorAlpha; // Blending source factor, for alpha
int glBlendDstFactorAlpha; // Blending destination factor, for alpha
int glBlendEquationAlpha; // Blending equation, for alpha
int framebufferWidth; // Default framebuffer width
int framebufferHeight; // Default framebuffer height
@ -1779,6 +1815,16 @@ void rlSetBlendMode(int mode)
case RL_BLEND_ADD_COLORS: glBlendFunc(GL_ONE, GL_ONE); glBlendEquation(GL_FUNC_ADD); break;
case RL_BLEND_SUBTRACT_COLORS: glBlendFunc(GL_ONE, GL_ONE); glBlendEquation(GL_FUNC_SUBTRACT); break;
case RL_BLEND_CUSTOM: glBlendFunc(RLGL.State.glBlendSrcFactor, RLGL.State.glBlendDstFactor); glBlendEquation(RLGL.State.glBlendEquation); break;
case RL_BLEND_CUSTOM:
glBlendFuncSeparate(
RLGL.State.glBlendSrcFactorColor, RLGL.State.glBlendDstFactorColor,
RLGL.State.glBlendSrcFactorAlpha, RLGL.State.glBlendDstFactorAlpha,
);
glBlendEquationSeparate(
RLGL.State.glBlendEquationColor,
RLGL.State.glBlendEquationAlpha
);
break;
default: break;
}
@ -1797,6 +1843,26 @@ void rlSetBlendFactors(int glSrcFactor, int glDstFactor, int glEquation)
#endif
}
// Set blending mode factor and equation for colors
void rlSetBlendColorFactors(int glSrcFactor, int glDstFactor, int glEquation)
{
#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
RLGL.State.glBlendSrcFactorColor = glSrcFactor;
RLGL.State.glBlendDstFactorColor = glDstFactor;
RLGL.State.glBlendEquationColor = glEquation;
#endif
}
// Set blending mode factor and equation for alphas
void rlSetBlendAlphaFactors(int glSrcFactor, int glDstFactor, int glEquation)
{
#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)
RLGL.State.glBlendSrcFactorAlpha = glSrcFactor;
RLGL.State.glBlendDstFactorAlpha = glDstFactor;
RLGL.State.glBlendEquationAlpha = glEquation;
#endif
}
//----------------------------------------------------------------------------------
// Module Functions Definition - OpenGL Debug
//----------------------------------------------------------------------------------