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REVIEWED: example: Compute shader Game-of-life

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Ray 2021-10-31 12:28:04 +01:00
parent f090f5444c
commit 1fac09d0f4
6 changed files with 316 additions and 322 deletions
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28
src/rlgl.h
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@ -662,7 +662,6 @@ RLAPI void rlSetUniformMatrix(int locIndex, Matrix mat);
RLAPI void rlSetUniformSampler(int locIndex, unsigned int textureId); // Set shader value sampler
RLAPI void rlSetShader(unsigned int id, int *locs); // Set shader currently active (id and locations)
#if defined(GRAPHICS_API_OPENGL_43)
// Compute shader management
RLAPI unsigned int rlLoadComputeShaderProgram(unsigned int shaderId); // Load compute shader program
RLAPI void rlComputeShaderDispatch(unsigned int groupX, unsigned int groupY, unsigned int groupZ); // Dispatch compute shader (equivalent to *draw* for graphics pilepine)
@ -678,7 +677,6 @@ RLAPI void rlBindShaderBuffer(unsigned int id, unsigned int index);
// Buffer management
RLAPI void rlCopyBuffersElements(unsigned int destId, unsigned int srcId, unsigned long long destOffset, unsigned long long srcOffset, unsigned long long count); // Copy SSBO buffer data
RLAPI void rlBindImageTexture(unsigned int id, unsigned int index, unsigned int format, int readonly); // Bind image texture
#endif
// Matrix state management
RLAPI Matrix rlGetMatrixModelview(void); // Get internal modelview matrix
@ -3836,12 +3834,12 @@ void rlSetShader(unsigned int id, int *locs)
#endif
}
#if defined(GRAPHICS_API_OPENGL_43)
// Load compute shader program
unsigned int rlLoadComputeShaderProgram(unsigned int shaderId)
{
unsigned int program = 0;
#if defined(GRAPHICS_API_OPENGL_43)
GLint success = 0;
program = glCreateProgram();
glAttachShader(program, shaderId);
@ -3880,6 +3878,7 @@ unsigned int rlLoadComputeShaderProgram(unsigned int shaderId)
TRACELOG(RL_LOG_INFO, "SHADER: [ID %i] Compute shader program loaded successfully", program);
}
#endif
return program;
}
@ -3887,17 +3886,21 @@ unsigned int rlLoadComputeShaderProgram(unsigned int shaderId)
// Dispatch compute shader (equivalent to *draw* for graphics pilepine)
void rlComputeShaderDispatch(unsigned int groupX, unsigned int groupY, unsigned int groupZ)
{
#if defined(GRAPHICS_API_OPENGL_43)
glDispatchCompute(groupX, groupY, groupZ);
#endif
}
// Load shader storage buffer object (SSBO)
unsigned int rlLoadShaderBuffer(unsigned long long size, const void *data, int usageHint)
{
unsigned int ssbo = 0;
#if defined(GRAPHICS_API_OPENGL_43)
glGenBuffers(1, &ssbo);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, ssbo);
glBufferData(GL_SHADER_STORAGE_BUFFER, size, data, usageHint? usageHint : RL_STREAM_COPY);
#endif
return ssbo;
}
@ -3905,23 +3908,29 @@ unsigned int rlLoadShaderBuffer(unsigned long long size, const void *data, int u
// Unload shader storage buffer object (SSBO)
void rlUnloadShaderBuffer(unsigned int ssboId)
{
#if defined(GRAPHICS_API_OPENGL_43)
glDeleteBuffers(1, &ssboId);
#endif
}
// Update SSBO buffer data
void rlUpdateShaderBufferElements(unsigned int id, const void *data, unsigned long long dataSize, unsigned long long offset)
{
#if defined(GRAPHICS_API_OPENGL_43)
glBindBuffer(GL_SHADER_STORAGE_BUFFER, id);
glBufferSubData(GL_SHADER_STORAGE_BUFFER, offset, dataSize, data);
#endif
}
// Get SSBO buffer size
unsigned long long rlGetShaderBufferSize(unsigned int id)
{
long long size = 0;
#if defined(GRAPHICS_API_OPENGL_43)
glBindBuffer(GL_SHADER_STORAGE_BUFFER, id);
glGetInteger64v(GL_SHADER_STORAGE_BUFFER_SIZE, &size);
#endif
return (size > 0)? size : 0;
}
@ -3929,33 +3938,40 @@ unsigned long long rlGetShaderBufferSize(unsigned int id)
// Read SSBO buffer data
void rlReadShaderBufferElements(unsigned int id, void *dest, unsigned long long count, unsigned long long offset)
{
#if defined(GRAPHICS_API_OPENGL_43)
glBindBuffer(GL_SHADER_STORAGE_BUFFER, id);
glGetBufferSubData(GL_SHADER_STORAGE_BUFFER, offset, count, dest);
#endif
}
// Bind SSBO buffer
void rlBindShaderBuffer(unsigned int id, unsigned int index)
{
#if defined(GRAPHICS_API_OPENGL_43)
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, index, id);
#endif
}
// Copy SSBO buffer data
void rlCopyBuffersElements(unsigned int destId, unsigned int srcId, unsigned long long destOffset, unsigned long long srcOffset, unsigned long long count)
{
#if defined(GRAPHICS_API_OPENGL_43)
glBindBuffer(GL_COPY_READ_BUFFER, srcId);
glBindBuffer(GL_COPY_WRITE_BUFFER, destId);
glCopyBufferSubData(GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER, srcOffset, destOffset, count);
#endif
}
// Bind image texture
void rlBindImageTexture(unsigned int id, unsigned int index, unsigned int format, int readonly)
{
#if defined(GRAPHICS_API_OPENGL_43)
int glInternalFormat = 0, glFormat = 0, glType = 0;
rlGetGlTextureFormats(format, &glInternalFormat, &glFormat, &glType);
glBindImageTexture(index, id, 0, 0, 0, readonly ? GL_READ_ONLY : GL_READ_WRITE, glInternalFormat);
}
#endif
}
// Matrix state management
//-----------------------------------------------------------------------------------------