X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Ftexture.cpp;h=1d2ece8074410ded753c621f4c4dd43418e2694d;hp=81373c97b8793bb99f66c5669e6bc7f761c5d7d9;hb=6b0a93110454cc8d84d0d9b9b29fe9d0ecbaa4d5;hpb=e1672476c5a258ff67fe1fcb47dd9a40b89169cb

diff --git a/source/texture.cpp b/source/texture.cpp
index 81373c97..1d2ece80 100644
--- a/source/texture.cpp
+++ b/source/texture.cpp
@@ -1,7 +1,11 @@
+#include <msp/gl/extensions/arb_direct_state_access.h>
 #include <msp/gl/extensions/arb_shadow.h>
+#include <msp/gl/extensions/arb_texture_swizzle.h>
+#include <msp/gl/extensions/ext_framebuffer_object.h>
 #include <msp/gl/extensions/ext_texture3d.h>
 #include <msp/gl/extensions/ext_texture_filter_anisotropic.h>
 #include <msp/gl/extensions/sgis_generate_mipmap.h>
+#include <msp/io/memory.h>
 #include <msp/strings/format.h>
 #include "error.h"
 #include "resourcemanager.h"
@@ -46,9 +50,17 @@ void operator>>(const LexicalConverter &c, TextureWrap &tw)
 }
 
 
+int Texture::swizzle_orders[] =
+{
+	GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA,
+	GL_RED, GL_RED, GL_RED, GL_ONE,
+	GL_RED, GL_RED, GL_RED, GL_GREEN
+};
+
 Texture::Texture(GLenum t, ResourceManager *m):
 	id(0),
 	target(t),
+	ifmt(RGB),
 	min_filter(NEAREST_MIPMAP_LINEAR),
 	mag_filter(LINEAR),
 	wrap_s(REPEAT),
@@ -61,6 +73,8 @@ Texture::Texture(GLenum t, ResourceManager *m):
 {
 	if(m)
 		set_manager(m);
+	else if(ARB_direct_state_access)
+		glCreateTextures(target, 1, &id);
 	else
 		glGenTextures(1, &id);
 }
@@ -74,9 +88,49 @@ Texture::~Texture()
 		glDeleteTextures(1, &id);
 }
 
+DataType Texture::get_alloc_type(PixelFormat fmt)
+{
+	return (get_base_pixelformat(fmt)==DEPTH_COMPONENT ? UNSIGNED_SHORT : UNSIGNED_BYTE);
+}
+
+void Texture::set_internal_format(PixelFormat fmt)
+{
+	if(!get_component_size(fmt) && OES_required_internalformat)
+		fmt = get_default_sized_pixelformat(fmt);
+
+	FormatSwizzle swiz = NO_SWIZZLE;
+	if(ARB_texture_rg && ARB_texture_swizzle)
+	{
+		if(fmt==LUMINANCE8 || fmt==SLUMINANCE8)
+		{
+			fmt = R8;
+			swiz = R_TO_LUMINANCE;
+		}
+		else if(fmt==LUMINANCE8_ALPHA8 || fmt==SLUMINANCE8_ALPHA8)
+		{
+			fmt = RG8;
+			swiz = RG_TO_LUMINANCE_ALPHA;
+		}
+	}
+
+	require_pixelformat(fmt);
+	ifmt = fmt;
+	swizzle = swiz;
+	if(swizzle)
+		update_parameter(FORMAT_SWIZZLE);
+}
+
+PixelFormat Texture::get_upload_format(PixelFormat fmt) const
+{
+	if(fmt==LUMINANCE || fmt==LUMINANCE_ALPHA)
+		return get_base_pixelformat(ifmt);
+	else
+		return fmt;
+}
+
 void Texture::update_parameter(int mask) const
 {
-	if(TexUnit::current().get_texture()!=this)
+	if(!ARB_direct_state_access && TexUnit::current().get_texture()!=this)
 	{
 		TexUnit *unit = TexUnit::find_unit(this);
 		if(!unit)
@@ -89,23 +143,56 @@ void Texture::update_parameter(int mask) const
 	}
 
 	if(mask&MIN_FILTER)
-		glTexParameteri(target, GL_TEXTURE_MIN_FILTER, min_filter);
+		set_parameter_i(GL_TEXTURE_MIN_FILTER, min_filter);
 	if(mask&MAG_FILTER)
-		glTexParameteri(target, GL_TEXTURE_MAG_FILTER, mag_filter);
+		set_parameter_i(GL_TEXTURE_MAG_FILTER, mag_filter);
 	if(mask&MAX_ANISOTROPY)
-		glTexParameteri(target, GL_TEXTURE_MAX_ANISOTROPY_EXT, max_anisotropy);
+		set_parameter_f(GL_TEXTURE_MAX_ANISOTROPY_EXT, max_anisotropy);
 	if(mask&WRAP_S)
-		glTexParameteri(target, GL_TEXTURE_WRAP_S, wrap_s);
+		set_parameter_i(GL_TEXTURE_WRAP_S, wrap_s);
 	if(mask&WRAP_T)
-		glTexParameteri(target, GL_TEXTURE_WRAP_T, wrap_t);
+		set_parameter_i(GL_TEXTURE_WRAP_T, wrap_t);
 	if(mask&WRAP_R)
-		glTexParameteri(target, GL_TEXTURE_WRAP_R, wrap_r);
+		set_parameter_i(GL_TEXTURE_WRAP_R, wrap_r);
 	if(mask&GENERATE_MIPMAP)
-		glTexParameteri(target, GL_GENERATE_MIPMAP, gen_mipmap);
+		set_parameter_i(GL_GENERATE_MIPMAP, gen_mipmap);
 	if(mask&COMPARE)
-		glTexParameteri(target, GL_TEXTURE_COMPARE_MODE, (compare ? GL_COMPARE_R_TO_TEXTURE : GL_NONE));
+		set_parameter_i(GL_TEXTURE_COMPARE_MODE, (compare ? GL_COMPARE_R_TO_TEXTURE : GL_NONE));
 	if(mask&COMPARE_FUNC)
-		glTexParameteri(target, GL_TEXTURE_COMPARE_FUNC, cmp_func);
+		set_parameter_i(GL_TEXTURE_COMPARE_FUNC, cmp_func);
+	if(mask&FORMAT_SWIZZLE)
+	{
+		if(get_gl_api()==OPENGL_ES2)
+		{
+			set_parameter_i(GL_TEXTURE_SWIZZLE_R, swizzle_orders[swizzle*4]);
+			set_parameter_i(GL_TEXTURE_SWIZZLE_G, swizzle_orders[swizzle*4+1]);
+			set_parameter_i(GL_TEXTURE_SWIZZLE_B, swizzle_orders[swizzle*4+2]);
+			set_parameter_i(GL_TEXTURE_SWIZZLE_A, swizzle_orders[swizzle*4+3]);
+		}
+		else
+		{
+			if(ARB_direct_state_access)
+				glTextureParameteriv(id, GL_TEXTURE_SWIZZLE_RGBA, swizzle_orders+swizzle*4);
+			else
+				glTexParameteriv(target, GL_TEXTURE_SWIZZLE_RGBA, swizzle_orders+swizzle*4);
+		}
+	}
+}
+
+void Texture::set_parameter_i(GLenum param, int value) const
+{
+	if(ARB_direct_state_access)
+		glTextureParameteri(id, param, value);
+	else
+		glTexParameteri(target, param, value);
+}
+
+void Texture::set_parameter_f(GLenum param, float value) const
+{
+	if(ARB_direct_state_access)
+		glTextureParameterf(id, param, value);
+	else
+		glTexParameterf(target, param, value);
 }
 
 void Texture::set_min_filter(TextureFilter f)
@@ -163,17 +250,36 @@ void Texture::set_wrap_r(TextureWrap w)
 	update_parameter(WRAP_R);
 }
 
+bool Texture::can_generate_mipmap()
+{
+	return (EXT_framebuffer_object || SGIS_generate_mipmap);
+}
+
 void Texture::set_generate_mipmap(bool gm)
 {
-	if(gm)
+	if(gm && !EXT_framebuffer_object)
 		static Require _req(SGIS_generate_mipmap);
 	gen_mipmap = gm;
-	update_parameter(GENERATE_MIPMAP);
+	if(!EXT_framebuffer_object)
+		update_parameter(GENERATE_MIPMAP);
+}
+
+void Texture::auto_generate_mipmap()
+{
+	// glGenerateMipmap is defined here
+	if(EXT_framebuffer_object)
+	{
+		if(ARB_direct_state_access)
+			glGenerateTextureMipmap(id);
+		else
+			glGenerateMipmap(target);
+	}
 }
 
 void Texture::set_compare_enabled(bool c)
 {
-	static Require _req(ARB_shadow);
+	if(c)
+		static Require _req(ARB_shadow);
 	compare = c;
 	update_parameter(COMPARE);
 }
@@ -185,6 +291,14 @@ void Texture::set_compare_func(Predicate f)
 	update_parameter(COMPARE_FUNC);
 }
 
+void Texture::load_image(const string &fn, bool srgb)
+{
+	Graphics::Image img;
+	img.load_file(fn);
+
+	image(img, srgb);
+}
+
 void Texture::bind_to(unsigned i) const
 {
 	if(!id)
@@ -261,10 +375,12 @@ void Texture::Loader::init()
 	else
 		srgb = false;
 
+	add("external_image", &Loader::external_image);
 	add("filter", &Loader::filter);
-	add("max_anisotropy", &Loader::max_anisotropy);
 	add("generate_mipmap", &Loader::generate_mipmap);
+	add("image_data", &Loader::image_data);
 	add("mag_filter", &Loader::mag_filter);
+	add("max_anisotropy", &Loader::max_anisotropy);
 	add("min_filter", &Loader::min_filter);
 	add("wrap",       &Loader::wrap);
 	add("wrap_r",     &Loader::wrap_r);
@@ -272,6 +388,15 @@ void Texture::Loader::init()
 	add("wrap_t",     &Loader::wrap_t);
 }
 
+void Texture::Loader::external_image(const string &fn)
+{
+	Graphics::Image img;
+	RefPtr<IO::Seekable> io = get_collection().open_raw(fn);
+	img.load_io(*io);
+
+	obj.image(img, srgb);
+}
+
 void Texture::Loader::filter(TextureFilter f)
 {
 	obj.set_filter(f);
@@ -282,6 +407,15 @@ void Texture::Loader::generate_mipmap(bool gm)
 	obj.set_generate_mipmap(gm);
 }
 
+void Texture::Loader::image_data(const string &data)
+{
+	Graphics::Image img;
+	IO::Memory mem(data.data(), data.size());
+	img.load_io(mem);
+
+	obj.image(img, srgb);
+}
+
 void Texture::Loader::mag_filter(TextureFilter f)
 {
 	obj.set_mag_filter(f);
@@ -317,5 +451,12 @@ void Texture::Loader::wrap_t(TextureWrap w)
 	obj.set_wrap_t(w);
 }
 
+
+bool is_mipmapped(TextureFilter filter)
+{
+	return (filter==NEAREST_MIPMAP_NEAREST || filter==NEAREST_MIPMAP_LINEAR ||
+		filter==LINEAR_MIPMAP_NEAREST || filter==LINEAR_MIPMAP_LINEAR);
+}
+
 } // namespace GL
 } // namespace Msp