DrawContext.c File Reference

#include "DrawContext.h"
#include <string.h>
#include <glad/glad.h>
#include <cglm/cglm.h>
#include "ObjectPool.h"
#include "Widget.h"
#include "DynArray.h"
#include "AssertLib.h"
#include "PlatformDefs.h"
#include "Game2DLayer.h"
#include "Log.h"

Include dependency graph for DrawContext.c:

Data Structures
struct	IndexedVertexBuffer
struct	VertexBuffer
struct	Shader

Enumerations
enum	ShaderType { ST_Vertex , ST_Fragment , ST_Program , ST_NUM }

Functions
	OBJECT_POOL (struct VertexBuffer)
void	WorldspaceVertexBufferData (HUIVertexBuffer hBuf, Worldspace2DVert *src, size_t size, VertIndexT *indices, u32 numIndices)
void	DrawWorldspaceVertexBuffer (H2DWorldspaceVertexBuffer hBuf, size_t indexCount, mat4 view)
void	DestroyWorldspaceVertexBuffer (H2DWorldspaceVertexBuffer hBuf)
DrawContext	Dr_InitDrawContext ()
void	Dr_OnScreenDimsChange (DrawContext *pCtx, int newW, int newH)

Variables
const char *	uiVert
const char *	uiFrag
const char *	worldspaceVert
const char *	worldspaceFrag
struct Shader	gUIShader = {0,0,0}
struct Shader	gWorldspace2DShader = { 0,0,0 }
mat4	gScreenspaceOrtho

Enumeration Type Documentation

ShaderType

enum ShaderType

Enumerator
ST_Vertex
ST_Fragment
ST_Program
ST_NUM

Function Documentation

DestroyWorldspaceVertexBuffer()

void DestroyWorldspaceVertexBuffer

(

H2DWorldspaceVertexBuffer

hBuf

)

Dr_InitDrawContext()

DrawContext Dr_InitDrawContext

(

)

Dr_OnScreenDimsChange()

void Dr_OnScreenDimsChange	(	DrawContext *	pCtx,
		int	newW,
		int	newH
	)

DrawWorldspaceVertexBuffer()

void DrawWorldspaceVertexBuffer	(	H2DWorldspaceVertexBuffer	hBuf,
		size_t	indexCount,
		mat4	view
	)

OBJECT_POOL()

OBJECT_POOL

(

struct VertexBuffer

)

WorldspaceVertexBufferData()

void WorldspaceVertexBufferData	(	HUIVertexBuffer	hBuf,
		Worldspace2DVert *	src,
		size_t	size,
		VertIndexT *	indices,
		u32	numIndices
	)

Variable Documentation

gScreenspaceOrtho

mat4 gScreenspaceOrtho

gUIShader

struct Shader gUIShader = {0,0,0}

gWorldspace2DShader

struct Shader gWorldspace2DShader = { 0,0,0 }

uiFrag

const char* uiFrag

Initial value:

=
 
"#version 330 core\n"
"out vec4 FragColor;\n"
"in vec4 Colour;\n"
"in vec2 UV;\n"
 
"uniform sampler2D ourTexture;\n"
 
"void main()\n"
"{\n"
    "FragColor = texture(ourTexture, UV) * Colour;\n"
"}\n"

uiVert

const char* uiVert

Initial value:

=
 
"#version 330 core\n"
"layout (location = 0) in vec2 aPos;\n"
"layout (location = 1) in vec2 aUv;\n"
"layout (location = 2) in vec4 aColour;\n"
"out vec2 UV;\n"
"out vec4 Colour;\n"
"uniform mat4 screenToClipMatrix;\n"
"void main()\n"
"{\n"
    "gl_Position = screenToClipMatrix * vec4(aPos, 0.0, 1.0);\n"
    "UV = aUv;\n"
    "Colour = aColour;"
"}\n"

worldspaceFrag

const char* worldspaceFrag

Initial value:

=
"#version 300 es\n"
"precision mediump float;\n"
"out vec4 FragColor;\n"
"in vec2 UV;\n"
 
"uniform sampler2D ourTexture;\n"
 
"void main()\n"
"{\n"
    "FragColor = texture(ourTexture, UV);\n"
"}\n"

worldspaceVert

const char* worldspaceVert

Initial value:

=
"#version 300 es\n"
"in vec2 aPos;\n"
"in vec2 aUv;\n"
"out vec2 UV;\n"
"uniform mat4 vp;\n"
"void main()\n"
"{\n"
    "gl_Position = vp * vec4(aPos, 0.0, 1.0);\n"
    "UV = aUv;\n"
"}\n"