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fixed canvas:clear() when multi-canvas rendering is active, changed some names and wording

Browse Source 
--HG--
branch : MRTs
This commit is contained in:
Alex Szpakowski
2013-03-26 04:58:43 -03:00
parent 6c5daab312
commit a55c7e871e
7 changed files with 72 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/modules/graphics/Graphics.cpp
+1 -1
View File
@@ -158,7 +158,7 @@ StringMap<Graphics::Support, Graphics::SUPPORT_MAX_ENUM>::Entry Graphics::suppor
{
{ "canvas", Graphics::SUPPORT_CANVAS },
{ "hdrcanvas", Graphics::SUPPORT_HDR_CANVAS },
{ "mrtcanvas", Graphics::SUPPORT_MRT_CANVAS },
{ "multicanvas", Graphics::SUPPORT_MULTI_CANVAS },
{ "shader", Graphics::SUPPORT_SHADER },
{ "npot", Graphics::SUPPORT_NPOT },
{ "subtractive", Graphics::SUPPORT_SUBTRACTIVE },
src/modules/graphics/Graphics.h
+1 -1
View File
@@ -87,7 +87,7 @@ public:
{
SUPPORT_CANVAS = 1,
SUPPORT_HDR_CANVAS,
SUPPORT_MRT_CANVAS,
SUPPORT_MULTI_CANVAS,
SUPPORT_SHADER,
SUPPORT_NPOT,
SUPPORT_SUBTRACTIVE,
src/modules/graphics/opengl/Canvas.cpp
+29 -14
View File
@@ -423,7 +423,7 @@ bool Canvas::isHDRSupported()
return GLEE_VERSION_3_0 || GLEE_ARB_texture_float;
}
bool Canvas::isMRTSupported()
bool Canvas::isMultiCanvasSupported()
{
if (!(isSupported() && (GLEE_VERSION_2_0 || GLEE_ARB_draw_buffers || GLEE_ATI_draw_buffers)))
return false;
@@ -434,7 +434,7 @@ bool Canvas::isMRTSupported()
glGetIntegerv(GL_MAX_DRAW_BUFFERS, &maxDrawBuffers);
}
// system must support at least 4 simultanious render targets
// system must support at least 4 simultanious active canvases
return maxFBOColorAttachments >= 4 && maxDrawBuffers >= 4;
}
@@ -478,11 +478,11 @@ void Canvas::startGrab(const std::vector<Canvas *> &canvases)
{
if (canvases.size() > 0)
{
if (!isMRTSupported())
throw love::Exception("Multiple render targets are not supported on this system.");
if (!isMultiCanvasSupported())
throw love::Exception("Multi-canvas rendering is not supported on this system.");
if (canvases.size() + 1 > maxDrawBuffers || canvases.size() + 1 > maxFBOColorAttachments)
throw love::Exception("This system can't support %d simultanious render targets.", canvases.size() + 1);
if (canvases.size()+1 > maxDrawBuffers || canvases.size()+1 > maxFBOColorAttachments)
throw love::Exception("This system can't simultaniously render to %d canvases.", canvases.size()+1);
}
for (size_t i = 0; i < canvases.size(); i++)
@@ -500,7 +500,7 @@ void Canvas::startGrab(const std::vector<Canvas *> &canvases)
if (canvases.size() == 0 && attachedCanvases.size() == 0)
return;
// attach the canvas textures to this FBO and set up multiple render targets
// attach the canvas textures to the active FBO and set up multiple render targets
strategy->setAttachments(canvases);
// retain newly attached canvases
@@ -521,7 +521,7 @@ void Canvas::startGrab()
if (attachedCanvases.size() == 0)
return;
// make sure the FBO is only using a single render target
// make sure the FBO is only using a single canvas
strategy->setAttachments();
// release any previously attached canvases
@@ -548,16 +548,31 @@ void Canvas::stopGrab()
void Canvas::clear(const Color &c)
{
GLuint previous = 0;
if (current != NULL)
previous = current->fbo;
strategy->bindFBO(fbo);
glPushAttrib(GL_COLOR_BUFFER_BIT);
if (current != this)
{
if (current != NULL)
previous = current->fbo;
strategy->bindFBO(fbo);
glPushAttrib(GL_COLOR_BUFFER_BIT);
}
// Make sure only this canvas is cleared when multi-canvas rendering is set
if (attachedCanvases.size() > 0)
strategy->setAttachments();
glClearColor((float)c.r/255.0f, (float)c.g/255.0f, (float)c.b/255.0f, (float)c.a/255.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
glPopAttrib();
strategy->bindFBO(previous);
if (attachedCanvases.size() > 0)
strategy->setAttachments(attachedCanvases);
if (current != this)
{
glPopAttrib();
strategy->bindFBO(previous);
}
}
void Canvas::draw(float x, float y, float angle, float sx, float sy, float ox, float oy, float kx, float ky) const
src/modules/graphics/opengl/Canvas.h
+1 -1
View File
@@ -101,7 +101,7 @@ public:
static bool isSupported();
static bool isHDRSupported();
static bool isMRTSupported();
static bool isMultiCanvasSupported();
static bool getConstant(const char *in, TextureType &out);
static bool getConstant(TextureType in, const char *&out);
src/modules/graphics/opengl/wrap_Graphics.cpp
+2 -2
View File
@@ -1083,8 +1083,8 @@ int w_isSupported(lua_State *L)
if (!Canvas::isHDRSupported())
supported = false;
break;
case Graphics::SUPPORT_MRT_CANVAS:
if (!Canvas::isMRTSupported())
case Graphics::SUPPORT_MULTI_CANVAS:
if (!Canvas::isMultiCanvasSupported())
supported = false;
break;
case Graphics::SUPPORT_SHADER:
src/scripts/graphics.lua
+10 -10
View File
@@ -1338,7 +1338,7 @@ void main() {
gl_FragColor = effect(VaryingColor, _tex0_, VaryingTexCoord.st, gl_FragCoord.xy);
}]],
FOOTER_MRT = [[
FOOTER_MULTI_CANVAS = [[
void main() {
// fix crashing issue in OSX when _tex0_ is unused within effect()
float dummy = texture2D(_tex0_, vec2(.5)).r;
@@ -1357,13 +1357,13 @@ void main() {
return table_concat(vertexcodes, "\n")
end
local function createPixelCode(pixelcode, is_mrt)
local function createPixelCode(pixelcode, is_multicanvas)
local pixelcodes = {
GLSL_VERSION,
GLSL_SYNTAX, GLSL_PIXEL.HEADER, GLSL_UNIFORMS,
"#line 0",
pixelcode,
is_mrt and GLSL_PIXEL.FOOTER_MRT or GLSL_PIXEL.FOOTER,
is_multicanvas and GLSL_PIXEL.FOOTER_MULTI_CANVAS or GLSL_PIXEL.FOOTER,
}
return table_concat(pixelcodes, "\n")
end
@@ -1375,7 +1375,7 @@ void main() {
local function isPixelCode(code)
if code:match("vec4%s*effect%(") then
return true
elseif code:match("void%s*effects%(") then -- multiple render targets (MRT)
elseif code:match("void%s*effects%(") then -- render to multiple canvases simultaniously
return true, true
else
return false
@@ -1384,7 +1384,7 @@ void main() {
function love.graphics._shaderCodeToGLSL(arg1, arg2)
local vertexcode, pixelcode
local is_mrt = false -- whether pixel code has "effects" function instead of "effect"
local is_multicanvas = false -- whether pixel code has "effects" function instead of "effect"
if arg1 then
local s = arg1:gsub("\r\n\t", " ") -- convert whitespace to spaces for parsing
@@ -1394,10 +1394,10 @@ void main() {
vertexcode = arg1 -- first arg contains vertex shader code
end
local ispixel, isMRT = isPixelCode(s)
local ispixel, isMultiCanvas = isPixelCode(s)
if ispixel then
pixelcode = arg1 -- first arg contains pixel shader code
is_mrt = isMRT
is_multicanvas = isMultiCanvas
end
end
@@ -1409,10 +1409,10 @@ void main() {
vertexcode = arg2 -- second arg contains vertex shader code
end
local ispixel, isMRT = isPixelCode(s)
local ispixel, isMultiCanvas = isPixelCode(s)
if ispixel then
pixelcode = arg2 -- second arg contains pixel shader code
is_mrt = isMRT
is_multicanvas = isMultiCanvas
end
end
@@ -1420,7 +1420,7 @@ void main() {
vertexcode = createVertexCode(vertexcode)
end
if pixelcode then
pixelcode = createPixelCode(pixelcode, is_mrt)
pixelcode = createPixelCode(pixelcode, is_multicanvas)
end
return vertexcode, pixelcode
src/scripts/graphics.lua.h
+28 -21
View File
@@ -6348,7 +6348,8 @@ const unsigned char graphics_lua[] =
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@@ -6383,7 +6384,8 @@ const unsigned char graphics_lua[] =
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@@ -6392,10 +6394,11 @@ const unsigned char graphics_lua[] =
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@@ -6415,9 +6418,9 @@ const unsigned char graphics_lua[] =
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@@ -6429,11 +6432,12 @@ const unsigned char graphics_lua[] =
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@@ -6453,14 +6457,15 @@ const unsigned char graphics_lua[] =
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@@ -6482,14 +6487,15 @@ const unsigned char graphics_lua[] =
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