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REVIEWED: example: Compute shader Game-of-life

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This commit is contained in:
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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41
examples/others/resources/shaders/glsl430/gol.glsl Normal file
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@ -0,0 +1,41 @@
#version 430
// Game of Life logic shader
#define GOL_WIDTH 768
layout (local_size_x = 16, local_size_y = 16, local_size_z = 1) in;
layout(std430, binding = 1) readonly restrict buffer golLayout {
uint golBuffer[]; // golBuffer[x, y] = golBuffer[x + gl_NumWorkGroups.x * y]
};
layout(std430, binding = 2) writeonly restrict buffer golLayout2 {
uint golBufferDest[]; // golBufferDest[x, y] = golBufferDest[x + gl_NumWorkGroups.x * y]
};
#define fetchGol(x, y) ((((x) < 0) || ((y) < 0) || ((x) > GOL_WIDTH) || ((y) > GOL_WIDTH)) \
? (0) \
: golBuffer[(x) + GOL_WIDTH * (y)])
#define setGol(x, y, value) golBufferDest[(x) + GOL_WIDTH*(y)] = value
void main()
{
uint neighbourCount = 0;
uint x = gl_GlobalInvocationID.x;
uint y = gl_GlobalInvocationID.y;
neighbourCount += fetchGol(x - 1, y - 1); // Top left
neighbourCount += fetchGol(x, y - 1); // Top middle
neighbourCount += fetchGol(x + 1, y - 1); // Top right
neighbourCount += fetchGol(x - 1, y); // Left
neighbourCount += fetchGol(x + 1, y); // Right
neighbourCount += fetchGol(x - 1, y + 1); // Bottom left
neighbourCount += fetchGol(x, y + 1); // Bottom middle
neighbourCount += fetchGol(x + 1, y + 1); // Bottom right
if (neighbourCount == 3) setGol(x, y, 1);
else if (neighbourCount == 2) setGol(x, y, fetchGol(x, y));
else setGol(x, y, 0);
}

63
examples/shaders/resources/shaders/glsl430/gol_render.glsl → examples/others/resources/shaders/glsl430/gol_render.glsl
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@ -1,34 +1,29 @@
// Game of Life rendering shader
// Just renders the content of the ssbo at binding 1 to screen.
#version 430
#define GOL_WIDTH 768
// Input vertex attributes (from vertex shader)
in vec2 fragTexCoord;
// Output fragment color
out vec4 finalColor;
// Input game of life grid.
layout(std430, binding = 1) readonly buffer golLayout
{
uint golBuffer[];
};
// Output resolution
uniform vec2 res;
void main()
{
ivec2 coords = ivec2(fragTexCoord * res);
if (golBuffer[coords.x + coords.y * uvec2(res).x] == 1)
{
finalColor = vec4(1.0);
}
else
{
finalColor = vec4(0.0, 0.0, 0.0, 1.0);
}
}
#version 430
// Game of Life rendering shader
// Just renders the content of the ssbo at binding 1 to screen
#define GOL_WIDTH 768
// Input vertex attributes (from vertex shader)
in vec2 fragTexCoord;
// Output fragment color
out vec4 finalColor;
// Input game of life grid.
layout(std430, binding = 1) readonly buffer golLayout
{
uint golBuffer[];
};
// Output resolution
uniform vec2 resolution;
void main()
{
ivec2 coords = ivec2(fragTexCoord*resolution);
if ((golBuffer[coords.x + coords.y*uvec2(resolution).x]) == 1) finalColor = vec4(1.0);
else finalColor = vec4(0.0, 0.0, 0.0, 1.0);
}

105
examples/shaders/resources/shaders/glsl430/gol_transfert.glsl → examples/others/resources/shaders/glsl430/gol_transfert.glsl
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@ -1,54 +1,51 @@
// Game of life transfert shader.
#version 430
#define GOL_WIDTH 768
// Structure definitions
struct GolUpdateCmd {
uint x; // x coordinate of the gol command
uint y; // y coordinate of the gol command
uint w; // width of the filled zone
uint enabled; // whether to enable or disable zone
};
// Local compute unit size.
layout (local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
// Output game of life grid buffer.
layout(std430, binding = 1) buffer golBufferLayout
{
uint golBuffer[]; // golBuffer[x, y] = golBuffer[x + GOL_WIDTH * y]
};
// Command buffer
layout(std430, binding = 3) readonly restrict buffer golUpdateLayout
{
uint count;
GolUpdateCmd commands[];
};
#define isInside(x, y) (((x) >= 0) && ((y) >= 0) && ((x) < GOL_WIDTH) && ((y) < GOL_WIDTH))
#define getBufferIndex(x, y) ((x) + GOL_WIDTH * (y))
void main()
{
uint cmd_index = gl_GlobalInvocationID.x;
GolUpdateCmd cmd = commands[cmd_index];
for (uint x = cmd.x; x < (cmd.x + cmd.w); x++)
{
for (uint y = cmd.y; y < (cmd.y + cmd.w); y++)
{
if (isInside(x, y))
{
if (cmd.enabled != 0)
{
atomicOr(golBuffer[getBufferIndex(x, y)], 1);
}
else
{
atomicAnd(golBuffer[getBufferIndex(x, y)], 0);
}
}
}
}
}
#version 430
// Game of life transfert shader
#define GOL_WIDTH 768
// Game Of Life Update Command
// NOTE: matches the structure defined on main program
struct GolUpdateCmd {
uint x; // x coordinate of the gol command
uint y; // y coordinate of the gol command
uint w; // width of the filled zone
uint enabled; // whether to enable or disable zone
};
// Local compute unit size
layout (local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
// Output game of life grid buffer
layout(std430, binding = 1) buffer golBufferLayout
{
uint golBuffer[]; // golBuffer[x, y] = golBuffer[x + GOL_WIDTH * y]
};
// Command buffer
layout(std430, binding = 3) readonly restrict buffer golUpdateLayout
{
uint count;
GolUpdateCmd commands[];
};
#define isInside(x, y) (((x) >= 0) && ((y) >= 0) && ((x) < GOL_WIDTH) && ((y) < GOL_WIDTH))
#define getBufferIndex(x, y) ((x) + GOL_WIDTH * (y))
void main()
{
uint cmdIndex = gl_GlobalInvocationID.x;
GolUpdateCmd cmd = commands[cmdIndex];
for (uint x = cmd.x; x < (cmd.x + cmd.w); x++)
{
for (uint y = cmd.y; y < (cmd.y + cmd.w); y++)
{
if (isInside(x, y))
{
if (cmd.enabled != 0) atomicOr(golBuffer[getBufferIndex(x, y)], 1);
else atomicAnd(golBuffer[getBufferIndex(x, y)], 0);
}
}
}
}

337
examples/shaders/shaders_compute_gol.c → examples/others/rlgl_compute_shader.c
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@ -1,164 +1,173 @@
/*******************************************************************************************
*
* raylib [shaders] example - Compute shaders Conway's Game of Life
*
* NOTE: This example requires raylib OpenGL 4.3 versions for compute shaders support,
*
* NOTE: Shaders used in this example are #version 430 (OpenGL 4.3).
*
* This example has been created using raylib 4.0 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
* Example contributed by Teddy Astie (@tsnake41)
*
* Copyright (c) 2021 Teddy Astie (@tsnake41)
*
********************************************************************************************/
#include <stdlib.h>
#include "raylib.h"
#include "rlgl.h"
// IMPORTANT: This must match gol*.glsl GOL_WIDTH constant.
// This must be a multiple of 16 (check golLogic compute dispatch).
#define GOL_WIDTH 768
// Maximum amount of queued draw commands (squares draw from mouse down events).
#define MAX_BUFFERED_TRANSFERTS 48
struct GolUpdateCmd
{
unsigned int x; // x coordinate of the gol command
unsigned int y; // y coordinate of the gol command
unsigned int w; // width of the filled zone
unsigned int enabled; // whether to enable or disable zone
};
struct GolUpdateSSBO
{
unsigned int count;
struct GolUpdateCmd commands[MAX_BUFFERED_TRANSFERTS];
};
int main(void)
{
// Initialization
//--------------------------------------------------------------------------------------
InitWindow(GOL_WIDTH, GOL_WIDTH, "raylib [shaders] example - compute shader gol");
const Vector2 resolution = { GOL_WIDTH, GOL_WIDTH };
unsigned int brushSize = 1;
// Game of Life logic compute shader
char *golLogicCode = LoadFileText("resources/shaders/glsl430/gol.glsl");
unsigned int golLogicShader = rlCompileShader(golLogicCode, RL_COMPUTE_SHADER);
unsigned int golLogicProgram = rlLoadComputeShaderProgram(golLogicShader);
MemFree(golLogicCode);
// Game of Life logic compute shader
Shader golRenderShader = LoadShader(NULL, "resources/shaders/glsl430/gol_render.glsl");
int resUniformLoc = GetShaderLocation(golRenderShader, "res");
// Game of Life transfert shader
char *golTransfertCode = LoadFileText("resources/shaders/glsl430/gol_transfert.glsl");
unsigned int golTransfertShader = rlCompileShader(golTransfertCode, RL_COMPUTE_SHADER);
unsigned int golTransfertProgram = rlLoadComputeShaderProgram(golTransfertShader);
MemFree(golTransfertCode);
// SSBOs
unsigned int ssboA = rlLoadShaderBuffer(sizeof(unsigned int) * GOL_WIDTH * GOL_WIDTH, NULL, RL_DYNAMIC_COPY);
unsigned int ssboB = rlLoadShaderBuffer(sizeof(unsigned int) * GOL_WIDTH * GOL_WIDTH, NULL, RL_DYNAMIC_COPY);
struct GolUpdateSSBO transfertBuffer;
transfertBuffer.count = 0;
int transfertSSBO = rlLoadShaderBuffer(sizeof(struct GolUpdateSSBO), NULL, RL_DYNAMIC_COPY);
// Create a white texture of the size of the window to update
// each pixel of the window using the fragment shader.
Image whiteImage = GenImageColor(GOL_WIDTH, GOL_WIDTH, WHITE);
Texture whiteTex = LoadTextureFromImage(whiteImage);
UnloadImage(whiteImage);
while (!WindowShouldClose())
{
if (IsKeyPressed(KEY_UP)) brushSize *= 2;
else if (IsKeyPressed(KEY_DOWN) && (brushSize != 1)) brushSize /= 2;
if ((IsMouseButtonDown(MOUSE_BUTTON_LEFT) || IsMouseButtonDown(MOUSE_BUTTON_RIGHT))
&& (transfertBuffer.count < MAX_BUFFERED_TRANSFERTS))
{
// Buffer a new command
transfertBuffer.commands[transfertBuffer.count].x = GetMouseX();
transfertBuffer.commands[transfertBuffer.count].y = GetMouseY();
transfertBuffer.commands[transfertBuffer.count].w = brushSize;
transfertBuffer.commands[transfertBuffer.count].enabled = IsMouseButtonDown(MOUSE_BUTTON_LEFT);
transfertBuffer.count++;
}
else if (transfertBuffer.count > 0)
{
// Process transfert buffer
// Send SSBO buffer to GPU
rlUpdateShaderBufferElements(transfertSSBO, &transfertBuffer, sizeof(struct GolUpdateSSBO), 0);
// Process ssbo command
rlEnableShader(golTransfertProgram);
rlBindShaderBuffer(ssboA, 1);
rlBindShaderBuffer(transfertSSBO, 3);
rlComputeShaderDispatch(transfertBuffer.count, 1, 1); // each GPU unit will process a command
rlDisableShader();
transfertBuffer.count = 0;
}
else
{
// Process game of life logic
rlEnableShader(golLogicProgram);
rlBindShaderBuffer(ssboA, 1);
rlBindShaderBuffer(ssboB, 2);
rlComputeShaderDispatch(GOL_WIDTH / 16, GOL_WIDTH / 16, 1);
rlDisableShader();
// ssboA <-> ssboB
int temp = ssboA;
ssboA = ssboB;
ssboB = temp;
}
rlBindShaderBuffer(ssboA, 1);
BeginDrawing();
ClearBackground(BLANK);
SetShaderValue(golRenderShader, resUniformLoc, &resolution, SHADER_UNIFORM_VEC2);
BeginShaderMode(golRenderShader);
DrawTexture(whiteTex, 0, 0, WHITE);
EndShaderMode();
DrawFPS(0, 0);
EndDrawing();
}
// De-Initialization
//--------------------------------------------------------------------------------------
// Unload shader buffers objects.
rlUnloadShaderBuffer(ssboA);
rlUnloadShaderBuffer(ssboB);
rlUnloadShaderBuffer(transfertSSBO);
// Unload compute shader programs
rlUnloadShaderProgram(golTransfertProgram);
rlUnloadShaderProgram(golLogicProgram);
UnloadTexture(whiteTex); // Unload white texture
UnloadShader(golRenderShader); // Unload rendering fragment shader
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
/*******************************************************************************************
*
* raylib [rlgl] example - compute shader - Conway's Game of Life
*
* NOTE: This example requires raylib OpenGL 4.3 versions for compute shaders support,
* shaders used in this example are #version 430 (OpenGL 4.3)
*
* This example has been created using raylib 4.0 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
* Example contributed by Teddy Astie (@tsnake41) and reviewed by Ramon Santamaria (@raysan5)
*
* Copyright (c) 2021 Teddy Astie (@tsnake41)
*
********************************************************************************************/
#include "raylib.h"
#include "rlgl.h"
#include <stdlib.h>
// IMPORTANT: This must match gol*.glsl GOL_WIDTH constant.
// This must be a multiple of 16 (check golLogic compute dispatch).
#define GOL_WIDTH 768
// Maximum amount of queued draw commands (squares draw from mouse down events).
#define MAX_BUFFERED_TRANSFERTS 48
// Game Of Life Update Command
typedef struct GolUpdateCmd {
unsigned int x; // x coordinate of the gol command
unsigned int y; // y coordinate of the gol command
unsigned int w; // width of the filled zone
unsigned int enabled; // whether to enable or disable zone
} GolUpdateCmd;
// Game Of Life Update Commands SSBO
typedef struct GolUpdateSSBO {
unsigned int count;
GolUpdateCmd commands[MAX_BUFFERED_TRANSFERTS];
} GolUpdateSSBO;
int main(void)
{
// Initialization
//--------------------------------------------------------------------------------------
InitWindow(GOL_WIDTH, GOL_WIDTH, "raylib [rlgl] example - compute shader - game of life");
const Vector2 resolution = { GOL_WIDTH, GOL_WIDTH };
unsigned int brushSize = 8;
// Game of Life logic compute shader
char *golLogicCode = LoadFileText("resources/shaders/glsl430/gol.glsl");
unsigned int golLogicShader = rlCompileShader(golLogicCode, RL_COMPUTE_SHADER);
unsigned int golLogicProgram = rlLoadComputeShaderProgram(golLogicShader);
UnloadFileText(golLogicCode);
// Game of Life logic compute shader
Shader golRenderShader = LoadShader(NULL, "resources/shaders/glsl430/gol_render.glsl");
int resUniformLoc = GetShaderLocation(golRenderShader, "resolution");
// Game of Life transfert shader
char *golTransfertCode = LoadFileText("resources/shaders/glsl430/gol_transfert.glsl");
unsigned int golTransfertShader = rlCompileShader(golTransfertCode, RL_COMPUTE_SHADER);
unsigned int golTransfertProgram = rlLoadComputeShaderProgram(golTransfertShader);
UnloadFileText(golTransfertCode);
// SSBOs
unsigned int ssboA = rlLoadShaderBuffer(GOL_WIDTH*GOL_WIDTH*sizeof(unsigned int), NULL, RL_DYNAMIC_COPY);
unsigned int ssboB = rlLoadShaderBuffer(GOL_WIDTH*GOL_WIDTH*sizeof(unsigned int), NULL, RL_DYNAMIC_COPY);
struct GolUpdateSSBO transfertBuffer;
transfertBuffer.count = 0;
int transfertSSBO = rlLoadShaderBuffer(sizeof(struct GolUpdateSSBO), NULL, RL_DYNAMIC_COPY);
// Create a white texture of the size of the window to update
// each pixel of the window using the fragment shader
Image whiteImage = GenImageColor(GOL_WIDTH, GOL_WIDTH, WHITE);
Texture whiteTex = LoadTextureFromImage(whiteImage);
UnloadImage(whiteImage);
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose())
{
// Update
//----------------------------------------------------------------------------------
brushSize += (int)GetMouseWheelMove();
if ((IsMouseButtonDown(MOUSE_BUTTON_LEFT) || IsMouseButtonDown(MOUSE_BUTTON_RIGHT))
&& (transfertBuffer.count < MAX_BUFFERED_TRANSFERTS))
{
// Buffer a new command
transfertBuffer.commands[transfertBuffer.count].x = GetMouseX() - brushSize/2;
transfertBuffer.commands[transfertBuffer.count].y = GetMouseY() - brushSize/2;
transfertBuffer.commands[transfertBuffer.count].w = brushSize;
transfertBuffer.commands[transfertBuffer.count].enabled = IsMouseButtonDown(MOUSE_BUTTON_LEFT);
transfertBuffer.count++;
}
else if (transfertBuffer.count > 0)
{
// Process transfert buffer
// Send SSBO buffer to GPU
rlUpdateShaderBufferElements(transfertSSBO, &transfertBuffer, sizeof(struct GolUpdateSSBO), 0);
// Process ssbo command
rlEnableShader(golTransfertProgram);
rlBindShaderBuffer(ssboA, 1);
rlBindShaderBuffer(transfertSSBO, 3);
rlComputeShaderDispatch(transfertBuffer.count, 1, 1); // each GPU unit will process a command
rlDisableShader();
transfertBuffer.count = 0;
}
else
{
// Process game of life logic
rlEnableShader(golLogicProgram);
rlBindShaderBuffer(ssboA, 1);
rlBindShaderBuffer(ssboB, 2);
rlComputeShaderDispatch(GOL_WIDTH/16, GOL_WIDTH/16, 1);
rlDisableShader();
// ssboA <-> ssboB
int temp = ssboA;
ssboA = ssboB;
ssboB = temp;
}
rlBindShaderBuffer(ssboA, 1);
SetShaderValue(golRenderShader, resUniformLoc, &resolution, SHADER_UNIFORM_VEC2);
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(BLANK);
BeginShaderMode(golRenderShader);
DrawTexture(whiteTex, 0, 0, WHITE);
EndShaderMode();
DrawRectangleLines(GetMouseX() - brushSize/2, GetMouseY() - brushSize/2, brushSize, brushSize, RED);
DrawText("Use Mouse wheel to increase/decrease brush size", 10, 10, 20, WHITE);
DrawFPS(GetScreenWidth() - 100, 10);
EndDrawing();
//----------------------------------------------------------------------------------
}
// De-Initialization
//--------------------------------------------------------------------------------------
// Unload shader buffers objects.
rlUnloadShaderBuffer(ssboA);
rlUnloadShaderBuffer(ssboB);
rlUnloadShaderBuffer(transfertSSBO);
// Unload compute shader programs
rlUnloadShaderProgram(golTransfertProgram);
rlUnloadShaderProgram(golLogicProgram);
UnloadTexture(whiteTex); // Unload white texture
UnloadShader(golRenderShader); // Unload rendering fragment shader
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}

64
examples/shaders/resources/shaders/glsl430/gol.glsl
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@ -1,64 +0,0 @@
// Game of Life logic shader
#version 430
#define GOL_WIDTH 768
layout (local_size_x = 16, local_size_y = 16, local_size_z = 1) in;
layout(std430, binding = 1) readonly restrict buffer golLayout {
uint golBuffer[]; // golBuffer[x, y] = golBuffer[x + gl_NumWorkGroups.x * y]
};
layout(std430, binding = 2) writeonly restrict buffer golLayout2 {
uint golBufferDest[]; // golBufferDest[x, y] = golBufferDest[x + gl_NumWorkGroups.x * y]
};
#define fetchGol(x, y) ((((x) < 0) || ((y) < 0) || ((x) > GOL_WIDTH) || ((y) > GOL_WIDTH)) \
? (0) \
: golBuffer[(x) + GOL_WIDTH * (y)])
#define setGol(x, y, value) golBufferDest[(x) + GOL_WIDTH * (y)] = value
void main()
{
uint neighbour_count = 0;
uint x = gl_GlobalInvocationID.x;
uint y = gl_GlobalInvocationID.y;
// Top left
neighbour_count += fetchGol(x - 1, y - 1);
// Top middle
neighbour_count += fetchGol(x, y - 1);
// Top right
neighbour_count += fetchGol(x + 1, y - 1);
// Left
neighbour_count += fetchGol(x - 1, y);
// Right
neighbour_count += fetchGol(x + 1, y);
// Bottom left
neighbour_count += fetchGol(x - 1, y + 1);
// Bottom middle
neighbour_count += fetchGol(x, y + 1);
// Bottom right
neighbour_count += fetchGol(x + 1, y + 1);
if (neighbour_count == 3)
{
setGol(x, y, 1);
}
else if (neighbour_count == 2)
{
setGol(x, y, fetchGol(x, y));
}
else
{
setGol(x, y, 0);
}
}

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
//-----------------------------------------------------------------------------------------