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Added support for several specific Canvas formats. Also added love.graphics.hasCanvasFormat.

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The list includes RGBA with 4-bit components, RGBA with 10-bit R, G, and B components and a 2-bit alpha component, RGB with 9-bit RGB components and a 5-bit exponent component (for HDR rendering), and several more.

--HG--
branch : Canvas-formats
This commit is contained in:
Alex Szpakowski
2014-05-13 20:54:58 -03:00
parent 6a491ed0f0
commit 408a593113
11 changed files with 249 additions and 110 deletions
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src/modules/graphics/opengl/Canvas.h
+31 -4
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@@ -25,6 +25,7 @@
#include "image/Image.h"
#include "image/ImageData.h"
#include "common/Matrix.h"
#include "common/StringMap.h"
#include "Texture.h"
#include "OpenGL.h"
@@ -39,7 +40,25 @@ class Canvas : public Texture
{
public:
Canvas(int width, int height, Texture::Format format = Texture::FORMAT_NORMAL, int fsaa = 0);
// Different Canvas render target formats.
enum Format
{
FORMAT_NORMAL,
FORMAT_HDR,
FORMAT_RGBA8,
FORMAT_RGBA4,
FORMAT_RGB5A1,
FORMAT_RGB565,
FORMAT_RGB10A2,
FORMAT_RGB9E5,
FORMAT_RG11B10F,
FORMAT_RGBA16F,
FORMAT_RGBA32F,
FORMAT_SRGB,
FORMAT_MAX_ENUM
};
Canvas(int width, int height, Format format = FORMAT_NORMAL, int fsaa = 0);
virtual ~Canvas();
// Implements Volatile.
@@ -85,7 +104,7 @@ public:
return status;
}
inline Texture::Format getTextureFormat() const
inline Format getTextureFormat() const
{
return format;
}
@@ -98,9 +117,8 @@ public:
bool resolveMSAA();
static bool isSupported();
static bool isHDRSupported();
static bool isSRGBSupported();
static bool isMultiCanvasSupported();
static bool isFormatSupported(Format format);
static Canvas *current;
static void bindDefaultCanvas();
@@ -111,10 +129,16 @@ public:
// Whether the main screen should have linear -> sRGB conversions enabled.
static bool screenHasSRGB;
static bool getConstant(const char *in, Format &out);
static bool getConstant(Format in, const char *&out);
private:
bool createFSAAFBO(GLenum internalformat);
static Format getSizedFormat(Format format);
static void convertFormat(Format format, GLenum &internalformat, GLenum &externalformat, GLenum &type);
GLuint fbo;
GLuint resolve_fbo;
@@ -134,6 +158,9 @@ private:
void setupGrab();
void drawv(const Matrix &t, const Vertex *v);
static StringMap<Format, FORMAT_MAX_ENUM>::Entry formatEntries[];
static StringMap<Format, FORMAT_MAX_ENUM> formats;
}; // Canvas
} // opengl